implot_demo.cpp

// MIT License

// Copyright (c) 2021 Evan Pezent

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

// ImPlot v0.10 WIP

#include "implot.h"
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#ifdef _MSC_VER
#define sprintf sprintf_s
#endif

#ifndef PI
#define PI 3.14159265358979323846
#endif

// Encapsulates examples for customizing ImPlot.
namespace MyImPlot {

// Example for Custom Data and Getters section.
struct Vector2f {
    Vector2f(float _x, float _y) { x = _x; y = _y; }
    float x, y;
};

// Example for Custom Data and Getters section.
struct WaveData {
    double X, Amp, Freq, Offset;
    WaveData(double x, double amp, double freq, double offset) { X = x; Amp = amp; Freq = freq; Offset = offset; }
};
ImPlotPoint SineWave(void* wave_data, int idx);
ImPlotPoint SawWave(void* wave_data, int idx);
ImPlotPoint Spiral(void*, int idx);

// Example for Tables section.
void Sparkline(const char* id, const float* values, int count, float min_v, float max_v, int offset, const ImVec4& col, const ImVec2& size);

// Example for Custom Plotters and Tooltips section.
void PlotCandlestick(const char* label_id, const double* xs, const double* opens, const double* closes, const double* lows, const double* highs, int count, bool tooltip = true, float width_percent = 0.25f, ImVec4 bullCol = ImVec4(0,1,0,1), ImVec4 bearCol = ImVec4(1,0,0,1));

// Example for Custom Styles section.
void StyleSeaborn();

} // namespace MyImPlot

namespace ImPlot {

void ShowBenchmarkTool();

template <typename T>
inline T RandomRange(T min, T max) {
    T scale = rand() / (T) RAND_MAX;
    return min + scale * ( max - min );
}

ImVec4 RandomColor() {
    ImVec4 col;
    col.x = RandomRange(0.0f,1.0f);
    col.y = RandomRange(0.0f,1.0f);
    col.z = RandomRange(0.0f,1.0f);
    col.w = 1.0f;
    return col;
}

double RandomGauss() {
	static double V1, V2, S;
	static int phase = 0;
	double X;
	if(phase == 0) {
		do {
			double U1 = (double)rand() / RAND_MAX;
			double U2 = (double)rand() / RAND_MAX;
			V1 = 2 * U1 - 1;
			V2 = 2 * U2 - 1;
			S = V1 * V1 + V2 * V2;
			} while(S >= 1 || S == 0);

		X = V1 * sqrt(-2 * log(S) / S);
	} else
		X = V2 * sqrt(-2 * log(S) / S);
	phase = 1 - phase;
	return X;
}

template <int N>
struct NormalDistribution {
    NormalDistribution(double mean, double sd) {
        for (int i = 0; i < N; ++i)
            Data[i] = RandomGauss()*sd + mean;
    }
    double Data[N];
};

// utility structure for realtime plot
struct ScrollingBuffer {
    int MaxSize;
    int Offset;
    ImVector<ImVec2> Data;
    ScrollingBuffer(int max_size = 2000) {
        MaxSize = max_size;
        Offset  = 0;
        Data.reserve(MaxSize);
    }
    void AddPoint(float x, float y) {
        if (Data.size() < MaxSize)
            Data.push_back(ImVec2(x,y));
        else {
            Data[Offset] = ImVec2(x,y);
            Offset =  (Offset + 1) % MaxSize;
        }
    }
    void Erase() {
        if (Data.size() > 0) {
            Data.shrink(0);
            Offset  = 0;
        }
    }
};

// utility structure for realtime plot
struct RollingBuffer {
    float Span;
    ImVector<ImVec2> Data;
    RollingBuffer() {
        Span = 10.0f;
        Data.reserve(2000);
    }
    void AddPoint(float x, float y) {
        float xmod = fmodf(x, Span);
        if (!Data.empty() && xmod < Data.back().x)
            Data.shrink(0);
        Data.push_back(ImVec2(xmod, y));
    }
};

// Huge data used by Time Formatting example (~500 MB allocation!)
struct HugeTimeData {
    HugeTimeData(double min) {
        Ts = new double[Size];
        Ys = new double[Size];
        for (int i = 0; i < Size; ++i) {
            Ts[i] = min + i;
            Ys[i] = GetY(Ts[i]);
        }
    }
    ~HugeTimeData() { delete[] Ts;  delete[] Ys; }
    static double GetY(double t) {
        return 0.5 + 0.25 * sin(t/86400/12) +  0.005 * sin(t/3600);
    }
    double* Ts;
    double* Ys;
    static const int Size = 60*60*24*366;
};

void ShowDemoWindow(bool* p_open) {
    double DEMO_TIME = ImGui::GetTime();
    static bool show_imgui_metrics       = false;
    static bool show_implot_metrics      = false;
    static bool show_imgui_style_editor  = false;
    static bool show_implot_style_editor = false;
    static bool show_implot_benchmark    = false;
    if (show_imgui_metrics) {
        ImGui::ShowMetricsWindow(&show_imgui_metrics);
    }
    if (show_implot_metrics) {
        ImPlot::ShowMetricsWindow(&show_implot_metrics);
    }
    if (show_imgui_style_editor) {
        ImGui::Begin("Style Editor (ImGui)", &show_imgui_style_editor);
        ImGui::ShowStyleEditor();
        ImGui::End();
    }
    if (show_implot_style_editor) {
        ImGui::SetNextWindowSize(ImVec2(415,762), ImGuiCond_Appearing);
        ImGui::Begin("Style Editor (ImPlot)", &show_implot_style_editor);
        ImPlot::ShowStyleEditor();
        ImGui::End();
    }
    if (show_implot_benchmark) {
        ImGui::SetNextWindowSize(ImVec2(530,740), ImGuiCond_Appearing);
        ImGui::Begin("ImPlot Benchmark Tool", &show_implot_benchmark);
        ImPlot::ShowBenchmarkTool();
        ImGui::End();
        return;
    }
    ImGui::SetNextWindowPos(ImVec2(50, 50), ImGuiCond_FirstUseEver);
    ImGui::SetNextWindowSize(ImVec2(600, 750), ImGuiCond_FirstUseEver);
    ImGui::Begin("ImPlot Demo", p_open, ImGuiWindowFlags_MenuBar);
    if (ImGui::BeginMenuBar()) {
        if (ImGui::BeginMenu("Tools")) {
            ImGui::MenuItem("Metrics (ImGui)",       NULL, &show_imgui_metrics);
            ImGui::MenuItem("Metrics (ImPlot)",      NULL, &show_implot_metrics);
            ImGui::MenuItem("Style Editor (ImGui)",  NULL, &show_imgui_style_editor);
            ImGui::MenuItem("Style Editor (ImPlot)", NULL, &show_implot_style_editor);
            ImGui::MenuItem("Benchmark",             NULL, &show_implot_benchmark);
            ImGui::EndMenu();
        }
        ImGui::EndMenuBar();
    }
    //-------------------------------------------------------------------------
    ImGui::Text("ImPlot says hello. (%s)", IMPLOT_VERSION);
    // display warning about 16-bit indices
    static bool showWarning = sizeof(ImDrawIdx)*8 == 16 && (ImGui::GetIO().BackendFlags & ImGuiBackendFlags_RendererHasVtxOffset) == false;
    if (showWarning) {
        ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(1,1,0,1));
        ImGui::TextWrapped("WARNING: ImDrawIdx is 16-bit and ImGuiBackendFlags_RendererHasVtxOffset is false. Expect visual glitches and artifacts! See README for more information.");
        ImGui::PopStyleColor();
    }

    ImGui::Spacing();

    if (ImGui::CollapsingHeader("Help")) {
        ImGui::Text("ABOUT THIS DEMO:");
        ImGui::BulletText("Sections below are demonstrating many aspects of the library.");
        ImGui::BulletText("The \"Tools\" menu above gives access to: Style Editors (ImPlot/ImGui)\n"
                          "and Metrics (general purpose Dear ImGui debugging tool).");
        ImGui::Separator();
        ImGui::Text("PROGRAMMER GUIDE:");
        ImGui::BulletText("See the ShowDemoWindow() code in implot_demo.cpp. <- you are here!");
        ImGui::BulletText("By default, anti-aliased lines are turned OFF.");
        ImGui::Indent();
            ImGui::BulletText("Software AA can be enabled globally with ImPlotStyle.AntiAliasedLines.");
            ImGui::BulletText("Software AA can be enabled per plot with ImPlotFlags_AntiAliased.");
            ImGui::BulletText("AA for plots can be toggled from the plot's context menu.");
            ImGui::BulletText("If permitable, you are better off using hardware AA (e.g. MSAA).");
        ImGui::Unindent();
        ImGui::BulletText("If you see visual artifacts, do one of the following:");
        ImGui::Indent();
        ImGui::BulletText("Handle ImGuiBackendFlags_RendererHasVtxOffset for 16-bit indices in your backend.");
        ImGui::BulletText("Or, enable 32-bit indices in imconfig.h.");
        ImGui::BulletText("Your current configuration is:");
        ImGui::Indent();
        ImGui::BulletText("ImDrawIdx: %d-bit", (int)(sizeof(ImDrawIdx) * 8));
        ImGui::BulletText("ImGuiBackendFlags_RendererHasVtxOffset: %s", (ImGui::GetIO().BackendFlags & ImGuiBackendFlags_RendererHasVtxOffset) ? "True" : "False");
        ImGui::Unindent();
        ImGui::Unindent();
        ImGui::Separator();
        ImGui::Text("USER GUIDE:");
        ShowUserGuide();
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Configuration")) {
        ImGui::ShowFontSelector("Font");
        ImGui::ShowStyleSelector("ImGui Style");
        ImPlot::ShowStyleSelector("ImPlot Style");
        ImPlot::ShowColormapSelector("ImPlot Colormap");
        float indent = ImGui::CalcItemWidth() - ImGui::GetFrameHeight();
        ImGui::Indent(ImGui::CalcItemWidth() - ImGui::GetFrameHeight());
        ImGui::Checkbox("Anti-Aliased Lines", &ImPlot::GetStyle().AntiAliasedLines);
        ImGui::Unindent(indent);
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Line Plots")) {
        static float xs1[1001], ys1[1001];
        for (int i = 0; i < 1001; ++i) {
            xs1[i] = i * 0.001f;
            ys1[i] = 0.5f + 0.5f * sinf(50 * (xs1[i] + (float)DEMO_TIME / 10));
        }
        static double xs2[11], ys2[11];
        for (int i = 0; i < 11; ++i) {
            xs2[i] = i * 0.1f;
            ys2[i] = xs2[i] * xs2[i];
        }
        ImGui::BulletText("Anti-aliasing can be enabled from the plot's context menu (see Help).");
        if (ImPlot::BeginPlot("Line Plot", "x", "f(x)")) {
            ImPlot::PlotLine("sin(x)", xs1, ys1, 1001);
            ImPlot::SetNextMarkerStyle(ImPlotMarker_Circle);
            ImPlot::PlotLine("x^2", xs2, ys2, 11);
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Filled Line Plots")) {
        static double xs1[101], ys1[101], ys2[101], ys3[101];
        srand(0);
        for (int i = 0; i < 101; ++i) {
            xs1[i] = (float)i;
            ys1[i] = RandomRange(400.0,450.0);
            ys2[i] = RandomRange(275.0,350.0);
            ys3[i] = RandomRange(150.0,225.0);
        }
        static bool show_lines = true;
        static bool show_fills = true;
        static float fill_ref = 0;
        static int shade_mode = 0;
        ImGui::Checkbox("Lines",&show_lines); ImGui::SameLine();
        ImGui::Checkbox("Fills",&show_fills);
        if (show_fills) {
            ImGui::SameLine();
            if (ImGui::RadioButton("To -INF",shade_mode == 0))
                shade_mode = 0;
            ImGui::SameLine();
            if (ImGui::RadioButton("To +INF",shade_mode == 1))
                shade_mode = 1;
            ImGui::SameLine();
            if (ImGui::RadioButton("To Ref",shade_mode == 2))
                shade_mode = 2;
            if (shade_mode == 2) {
                ImGui::SameLine();
                ImGui::SetNextItemWidth(100);
                ImGui::DragFloat("##Ref",&fill_ref, 1, -100, 500);
            }
        }


        ImPlot::SetNextPlotLimits(0,100,0,500);
        if (ImPlot::BeginPlot("Stock Prices", "Days", "Price")) {
            if (show_fills) {
                ImPlot::PushStyleVar(ImPlotStyleVar_FillAlpha, 0.25f);
                ImPlot::PlotShaded("Stock 1", xs1, ys1, 101, shade_mode == 0 ? -INFINITY : shade_mode == 1 ? INFINITY : fill_ref);
                ImPlot::PlotShaded("Stock 2", xs1, ys2, 101, shade_mode == 0 ? -INFINITY : shade_mode == 1 ? INFINITY : fill_ref);
                ImPlot::PlotShaded("Stock 3", xs1, ys3, 101, shade_mode == 0 ? -INFINITY : shade_mode == 1 ? INFINITY : fill_ref);
                ImPlot::PopStyleVar();
            }
            if (show_lines) {
                ImPlot::PlotLine("Stock 1", xs1, ys1, 101);
                ImPlot::PlotLine("Stock 2", xs1, ys2, 101);
                ImPlot::PlotLine("Stock 3", xs1, ys3, 101);
            }
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Shaded Plots##")) {
        static float xs[1001], ys[1001], ys1[1001], ys2[1001], ys3[1001], ys4[1001];
        srand(0);
        for (int i = 0; i < 1001; ++i) {
            xs[i]  = i * 0.001f;
            ys[i]  = 0.25f + 0.25f * sinf(25 * xs[i]) * sinf(5 * xs[i]) + RandomRange(-0.01f, 0.01f);
            ys1[i] = ys[i] + RandomRange(0.1f, 0.12f);
            ys2[i] = ys[i] - RandomRange(0.1f, 0.12f);
            ys3[i] = 0.75f + 0.2f * sinf(25 * xs[i]);
            ys4[i] = 0.75f + 0.1f * cosf(25 * xs[i]);
        }
        static float alpha = 0.25f;
        ImGui::DragFloat("Alpha",&alpha,0.01f,0,1);

        if (ImPlot::BeginPlot("Shaded Plots", "X-Axis", "Y-Axis")) {
            ImPlot::PushStyleVar(ImPlotStyleVar_FillAlpha, alpha);
            ImPlot::PlotShaded("Uncertain Data",xs,ys1,ys2,1001);
            ImPlot::PlotLine("Uncertain Data", xs, ys, 1001);
            ImPlot::PlotShaded("Overlapping",xs,ys3,ys4,1001);
            ImPlot::PlotLine("Overlapping",xs,ys3,1001);
            ImPlot::PlotLine("Overlapping",xs,ys4,1001);
            ImPlot::PopStyleVar();
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Scatter Plots")) {
        srand(0);
        static float xs1[100], ys1[100];
        for (int i = 0; i < 100; ++i) {
            xs1[i] = i * 0.01f;
            ys1[i] = xs1[i] + 0.1f * ((float)rand() / (float)RAND_MAX);
        }
        static float xs2[50], ys2[50];
        for (int i = 0; i < 50; i++) {
            xs2[i] = 0.25f + 0.2f * ((float)rand() / (float)RAND_MAX);
            ys2[i] = 0.75f + 0.2f * ((float)rand() / (float)RAND_MAX);
        }

        if (ImPlot::BeginPlot("Scatter Plot", NULL, NULL)) {
            ImPlot::PlotScatter("Data 1", xs1, ys1, 100);
            ImPlot::PushStyleVar(ImPlotStyleVar_FillAlpha, 0.25f);
            ImPlot::SetNextMarkerStyle(ImPlotMarker_Square, 6, ImVec4(0,1,0,0.5f), IMPLOT_AUTO, ImVec4(0,1,0,1));
            ImPlot::PlotScatter("Data 2", xs2, ys2, 50);
            ImPlot::PopStyleVar();
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Stairstep Plots")) {
        static float ys1[101], ys2[101];
        for (int i = 0; i < 101; ++i) {
            ys1[i] = 0.5f + 0.4f * sinf(50 * i * 0.01f);
            ys2[i] = 0.5f + 0.2f * sinf(25 * i * 0.01f);
        }
        if (ImPlot::BeginPlot("Stairstep Plot", "x", "f(x)")) {
            ImPlot::PlotStairs("Signal 1", ys1, 101, 0.01f);
            ImPlot::SetNextMarkerStyle(ImPlotMarker_Square, 2.0f);
            ImPlot::PlotStairs("Signal 2", ys2, 101, 0.01f);
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Bar Plots")) {

        static bool horz                = false;
        static ImS8  midtm[10]          = {83, 67, 23, 89, 83, 78, 91, 82, 85, 90};
        static ImS16 final[10]          = {80, 62, 56, 99, 55, 78, 88, 78, 90, 100};
        static ImS32 grade[10]          = {80, 69, 52, 92, 72, 78, 75, 76, 89, 95};

        static const char*  labels[]    = {"S1","S2","S3","S4","S5","S6","S7","S8","S9","S10"};
        static const double positions[] = {0,1,2,3,4,5,6,7,8,9};

        ImGui::Checkbox("Horizontal",&horz);

        if (horz) {
            ImPlot::SetNextPlotLimits(0, 110, -0.5, 9.5, ImGuiCond_Always);
            ImPlot::SetNextPlotTicksY(positions, 10, labels);
        }
        else {
            ImPlot::SetNextPlotLimits(-0.5, 9.5, 0, 110, ImGuiCond_Always);
            ImPlot::SetNextPlotTicksX(positions, 10, labels);
        }
        if (ImPlot::BeginPlot("Bar Plot", horz ? "Score" :  "Student", horz ? "Student" : "Score",
                              ImVec2(-1,0), 0, 0, horz ? ImPlotAxisFlags_Invert : 0))
        {
            if (horz) {
                ImPlot::SetLegendLocation(ImPlotLocation_West, ImPlotOrientation_Vertical);
                ImPlot::PlotBarsH("Midterm Exam", midtm, 10, 0.2, -0.2);
                ImPlot::PlotBarsH("Final Exam",   final, 10, 0.2,    0);
                ImPlot::PlotBarsH("Course Grade", grade, 10, 0.2,  0.2);
            }
            else {
                ImPlot::SetLegendLocation(ImPlotLocation_South, ImPlotOrientation_Horizontal);
                ImPlot::PlotBars("Midterm Exam", midtm, 10, 0.2, -0.2);
                ImPlot::PlotBars("Final Exam",   final, 10, 0.2,    0);
                ImPlot::PlotBars("Course Grade", grade, 10, 0.2,  0.2);
            }
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Error Bars")) {
        static float xs[5]    = {1,2,3,4,5};
        static float bar[5]   = {1,2,5,3,4};
        static float lin1[5]  = {8,8,9,7,8};
        static float lin2[5]  = {6,7,6,9,6};
        static float err1[5]  = {0.2f, 0.4f, 0.2f, 0.6f, 0.4f};
        static float err2[5]  = {0.4f, 0.2f, 0.4f, 0.8f, 0.6f};
        static float err3[5]  = {0.09f, 0.14f, 0.09f, 0.12f, 0.16f};
        static float err4[5]  = {0.02f, 0.08f, 0.15f, 0.05f, 0.2f};


        ImPlot::SetNextPlotLimits(0, 6, 0, 10);
        if (ImPlot::BeginPlot("##ErrorBars",NULL,NULL)) {

            ImPlot::PlotBars("Bar", xs, bar, 5, 0.5f);
            ImPlot::PlotErrorBars("Bar", xs, bar, err1, 5);

            ImPlot::SetNextErrorBarStyle(ImPlot::GetColormapColor(1), 0);
            ImPlot::PlotErrorBars("Line", xs, lin1, err1, err2, 5);
            ImPlot::SetNextMarkerStyle(ImPlotMarker_Circle);
            ImPlot::PlotLine("Line", xs, lin1, 5);

            ImPlot::PushStyleColor(ImPlotCol_ErrorBar, ImPlot::GetColormapColor(2));
            ImPlot::PlotErrorBars("Scatter", xs, lin2, err2, 5);
            ImPlot::PlotErrorBarsH("Scatter", xs, lin2,  err3, err4, 5);
            ImPlot::PopStyleColor();
            ImPlot::PlotScatter("Scatter", xs, lin2, 5);

            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Stem Plots##")) {
        static double xs[51], ys1[51], ys2[51];
        for (int i = 0; i < 51; ++i) {
            xs[i] = i * 0.02;
            ys1[i] = 1.0 + 0.5 * sin(25*xs[i])*cos(2*xs[i]);
            ys2[i] = 0.5 + 0.25  * sin(10*xs[i]) * sin(xs[i]);
        }
        ImPlot::SetNextPlotLimits(0,1,0,1.6);
        if (ImPlot::BeginPlot("Stem Plots")) {
            ImPlot::PlotStems("Stems 1",xs,ys1,51);
            ImPlot::SetNextLineStyle(ImVec4(1,0.5f,0,0.75f));
            ImPlot::SetNextMarkerStyle(ImPlotMarker_Square,5,ImVec4(1,0.5f,0,0.25f));
            ImPlot::PlotStems("Stems 2", xs, ys2,51);
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Infinite Lines")) {
        static double vals[] = {0.25, 0.5, 0.75};
        if (ImPlot::BeginPlot("##Infinite",0,0,ImVec2(-1,0),0,ImPlotAxisFlags_NoInitialFit,ImPlotAxisFlags_NoInitialFit)) {
            ImPlot::PlotVLines("VLines",vals,3);
            ImPlot::PlotHLines("HLines",vals,3);
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Pie Charts")) {
        static const char* labels1[]   = {"Frogs","Hogs","Dogs","Logs"};
        static float data1[]           = {0.15f,  0.30f,  0.2f, 0.05f};
        static bool normalize          = false;
        ImGui::SetNextItemWidth(250);
        ImGui::DragFloat4("Values", data1, 0.01f, 0, 1);
        if ((data1[0] + data1[1] + data1[2] + data1[3]) < 1) {
            ImGui::SameLine();
            ImGui::Checkbox("Normalize", &normalize);
        }

        ImPlot::SetNextPlotLimits(0,1,0,1,ImGuiCond_Always);
        if (ImPlot::BeginPlot("##Pie1", NULL, NULL, ImVec2(250,250), ImPlotFlags_Equal | ImPlotFlags_NoMousePos, ImPlotAxisFlags_NoDecorations, ImPlotAxisFlags_NoDecorations)) {
            ImPlot::PlotPieChart(labels1, data1, 4, 0.5, 0.5, 0.4, normalize, "%.2f");
            ImPlot::EndPlot();
        }

        ImGui::SameLine();

        static const char* labels2[]   = {"A","B","C","D","E"};
        static int data2[]             = {1,1,2,3,5};

        ImPlot::PushColormap(ImPlotColormap_Pastel);
        ImPlot::SetNextPlotLimits(0,1,0,1,ImGuiCond_Always);
        if (ImPlot::BeginPlot("##Pie2", NULL, NULL, ImVec2(250,250), ImPlotFlags_Equal | ImPlotFlags_NoMousePos, ImPlotAxisFlags_NoDecorations, ImPlotAxisFlags_NoDecorations)) {
            ImPlot::PlotPieChart(labels2, data2, 5, 0.5, 0.5, 0.4, true, "%.0f", 180);
            ImPlot::EndPlot();
        }
        ImPlot::PopColormap();
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Heatmaps")) {
        static float values1[7][7]  = {{0.8f, 2.4f, 2.5f, 3.9f, 0.0f, 4.0f, 0.0f},
                                       {2.4f, 0.0f, 4.0f, 1.0f, 2.7f, 0.0f, 0.0f},
                                       {1.1f, 2.4f, 0.8f, 4.3f, 1.9f, 4.4f, 0.0f},
                                       {0.6f, 0.0f, 0.3f, 0.0f, 3.1f, 0.0f, 0.0f},
                                       {0.7f, 1.7f, 0.6f, 2.6f, 2.2f, 6.2f, 0.0f},
                                       {1.3f, 1.2f, 0.0f, 0.0f, 0.0f, 3.2f, 5.1f},
                                       {0.1f, 2.0f, 0.0f, 1.4f, 0.0f, 1.9f, 6.3f}};
        static float scale_min       = 0;
        static float scale_max       = 6.3f;
        static const char* xlabels[] = {"C1","C2","C3","C4","C5","C6","C7"};
        static const char* ylabels[] = {"R1","R2","R3","R4","R5","R6","R7"};

        static ImPlotColormap map = ImPlotColormap_Viridis;
        if (ImPlot::ColormapButton(ImPlot::GetColormapName(map),ImVec2(225,0),map)) {
            map = (map + 1) % ImPlot::GetColormapCount();
            // We bust the color cache of our plots so that item colors will
            // resample the new colormap in the event that they have already
            // been created. See documentation in implot.h.
            BustColorCache("##Heatmap1");
            BustColorCache("##Heatmap2");
        }

        ImGui::SameLine();
        ImGui::LabelText("##Colormap Index", "%s", "Change Colormap");
        ImGui::SetNextItemWidth(225);
        ImGui::DragFloatRange2("Min / Max",&scale_min, &scale_max, 0.01f, -20, 20);
        static ImPlotAxisFlags axes_flags = ImPlotAxisFlags_Lock | ImPlotAxisFlags_NoGridLines | ImPlotAxisFlags_NoTickMarks;

        ImPlot::PushColormap(map);
        SetNextPlotTicksX(0 + 1.0/14.0, 1 - 1.0/14.0, 7, xlabels);
        SetNextPlotTicksY(1 - 1.0/14.0, 0 + 1.0/14.0, 7, ylabels);
        if (ImPlot::BeginPlot("##Heatmap1",NULL,NULL,ImVec2(225,225),ImPlotFlags_NoLegend|ImPlotFlags_NoMousePos,axes_flags,axes_flags)) {
            ImPlot::PlotHeatmap("heat",values1[0],7,7,scale_min,scale_max);
            ImPlot::EndPlot();
        }
        ImGui::SameLine();
        ImPlot::ColormapScale("##HeatScale",scale_min, scale_max, ImVec2(60,225));

        ImGui::SameLine();

        const int size = 200;
        static double values2[size*size];
        srand((unsigned int)(DEMO_TIME*1000000));
        for (int i = 0; i < size*size; ++i)
            values2[i] = RandomRange(0.0,1.0);

        ImPlot::SetNextPlotLimits(-1,1,-1,1);
        if (ImPlot::BeginPlot("##Heatmap2",NULL,NULL,ImVec2(225,225),0,ImPlotAxisFlags_NoDecorations,ImPlotAxisFlags_NoDecorations)) {
            ImPlot::PlotHeatmap("heat1",values2,size,size,0,1,NULL);
            ImPlot::PlotHeatmap("heat2",values2,size,size,0,1,NULL, ImPlotPoint(-1,-1), ImPlotPoint(0,0));
            ImPlot::EndPlot();
        }
        ImPlot::PopColormap();

    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Histograms")) {
        static int  bins       = 50;
        static bool cumulative = false;
        static bool density    = true;
        static bool outliers   = true;
        static double mu       = 5;
        static double sigma    = 2;

        ImGui::SetNextItemWidth(200);
        if (ImGui::RadioButton("Sqrt",bins==ImPlotBin_Sqrt))       { bins = ImPlotBin_Sqrt;    } ImGui::SameLine();
        if (ImGui::RadioButton("Sturges",bins==ImPlotBin_Sturges)) { bins = ImPlotBin_Sturges; } ImGui::SameLine();
        if (ImGui::RadioButton("Rice",bins==ImPlotBin_Rice))       { bins = ImPlotBin_Rice;    } ImGui::SameLine();
        if (ImGui::RadioButton("Scott",bins==ImPlotBin_Scott))     { bins = ImPlotBin_Scott;   } ImGui::SameLine();
        if (ImGui::RadioButton("N Bins",bins>=0))                       bins = 50;
        if (bins>=0) {
            ImGui::SameLine();
            ImGui::SetNextItemWidth(200);
            ImGui::SliderInt("##Bins", &bins, 1, 100);
        }
        if (ImGui::Checkbox("Density", &density))
            ImPlot::FitNextPlotAxes();
        ImGui::SameLine();
        if (ImGui::Checkbox("Cumulative", &cumulative))
            ImPlot::FitNextPlotAxes();
        ImGui::SameLine();
        static bool range = false;
        ImGui::Checkbox("Range", &range);
        static float rmin = -3;
        static float rmax = 13;
        if (range) {
            ImGui::SameLine();
            ImGui::SetNextItemWidth(200);
            ImGui::DragFloat2("##Range",&rmin,0.1f,-3,13);
            ImGui::SameLine();
            ImGui::Checkbox("Outliers",&outliers);
        }

        static NormalDistribution<10000> dist(mu, sigma);
        static double x[100];
        static double y[100];
        if (density) {
            for (int i = 0; i < 100; ++i) {
                x[i] = -3 + 16 * (double)i/99.0;
                y[i] = exp( - (x[i]-mu)*(x[i]-mu) / (2*sigma*sigma)) / (sigma * sqrt(2*3.141592653589793238));
            }
            if (cumulative) {
                for (int i = 1; i < 100; ++i)
                    y[i] += y[i-1];
                for (int i = 0; i < 100; ++i)
                    y[i] /= y[99];
            }
        }

        if (ImPlot::BeginPlot("##Histograms")) {
            ImPlot::SetNextFillStyle(IMPLOT_AUTO_COL, 0.5f);
            ImPlot::PlotHistogram("Empirical", dist.Data, 10000, bins, cumulative, density, range ? ImPlotRange(rmin,rmax) : ImPlotRange(), outliers);
            if (density && outliers)
                ImPlot::PlotLine("Theoretical",x,y,100);
            ImPlot::EndPlot();
        }

        static int count     = 500000;
        static int xybins[2] = {200,200};
        static bool density2 = false;
        ImGui::SliderInt("Count",&count,100,500000);
        ImGui::SliderInt2("Bins",xybins,1,500);
        ImGui::SameLine();
        ImGui::Checkbox("Density##2",&density2);
        static NormalDistribution<500000> dist1(1, 2);
        static NormalDistribution<500000> dist2(1, 1);
        double max_count = 0;
        ImPlotAxisFlags flags = ImPlotAxisFlags_AutoFit|ImPlotAxisFlags_Foreground;
        ImPlot::PushColormap("Hot");
        if (ImPlot::BeginPlot("##Hist2D",0,0,ImVec2(ImGui::GetContentRegionAvail().x-100-ImGui::GetStyle().ItemSpacing.x,0),0,flags,flags)) {
            max_count = ImPlot::PlotHistogram2D("Hist2D",dist1.Data,dist2.Data,count,xybins[0],xybins[1],density2,ImPlotLimits(-6,6,-6,6));
            ImPlot::EndPlot();
        }
        ImGui::SameLine();
        ImPlot::ColormapScale(density2 ? "Density" : "Count",0,max_count,ImVec2(100,0));
        ImPlot::PopColormap();
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Digital Plots")) {
        ImGui::BulletText("Digital plots do not respond to Y drag and zoom, so that");
        ImGui::Indent();
        ImGui::Text("you can drag analog plots over the rising/falling digital edge.");
        ImGui::Unindent();

        static bool paused = false;
        static ScrollingBuffer dataDigital[2];
        static ScrollingBuffer dataAnalog[2];
        static bool showDigital[2] = {true, false};
        static bool showAnalog[2] = {true, false};

        char label[32];
        ImGui::Checkbox("digital_0", &showDigital[0]); ImGui::SameLine();
        ImGui::Checkbox("digital_1", &showDigital[1]); ImGui::SameLine();
        ImGui::Checkbox("analog_0",  &showAnalog[0]);  ImGui::SameLine();
        ImGui::Checkbox("analog_1",  &showAnalog[1]);

        static float t = 0;
        if (!paused) {
            t += ImGui::GetIO().DeltaTime;
            //digital signal values
            if (showDigital[0])
                dataDigital[0].AddPoint(t, sinf(2*t) > 0.45);
            if (showDigital[1])
                dataDigital[1].AddPoint(t, sinf(2*t) < 0.45);
            //Analog signal values
            if (showAnalog[0])
                dataAnalog[0].AddPoint(t, sinf(2*t));
            if (showAnalog[1])
                dataAnalog[1].AddPoint(t, cosf(2*t));
        }
        ImPlot::SetNextPlotLimitsY(-1, 1);
        ImPlot::SetNextPlotLimitsX(t - 10.0, t, paused ? ImGuiCond_Once : ImGuiCond_Always);
        if (ImPlot::BeginPlot("##Digital")) {
            for (int i = 0; i < 2; ++i) {
                if (showDigital[i] && dataDigital[i].Data.size() > 0) {
                    sprintf(label, "digital_%d", i);
                    ImPlot::PlotDigital(label, &dataDigital[i].Data[0].x, &dataDigital[i].Data[0].y, dataDigital[i].Data.size(), dataDigital[i].Offset, 2 * sizeof(float));
                }
            }
            for (int i = 0; i < 2; ++i) {
                if (showAnalog[i]) {
                    sprintf(label, "analog_%d", i);
                    if (dataAnalog[i].Data.size() > 0)
                        ImPlot::PlotLine(label, &dataAnalog[i].Data[0].x, &dataAnalog[i].Data[0].y, dataAnalog[i].Data.size(), dataAnalog[i].Offset, 2 * sizeof(float));
                }
            }
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Images")) {
        ImGui::BulletText("Below we are displaying the font texture, which is the only texture we have\naccess to in this demo.");
        ImGui::BulletText("Use the 'ImTextureID' type as storage to pass pointers or identifiers to your\nown texture data.");
        ImGui::BulletText("See ImGui Wiki page 'Image Loading and Displaying Examples'.");
        static ImVec2 bmin(0,0);
        static ImVec2 bmax(1,1);
        static ImVec2 uv0(0,0);
        static ImVec2 uv1(1,1);
        static ImVec4 tint(1,1,1,1);
        ImGui::SliderFloat2("Min", &bmin.x, -2, 2, "%.1f");
        ImGui::SliderFloat2("Max", &bmax.x, -2, 2, "%.1f");
        ImGui::SliderFloat2("UV0", &uv0.x, -2, 2, "%.1f");
        ImGui::SliderFloat2("UV1", &uv1.x, -2, 2, "%.1f");
        ImGui::ColorEdit4("Tint",&tint.x);
        if (ImPlot::BeginPlot("##image")) {
            ImPlot::PlotImage("my image",ImGui::GetIO().Fonts->TexID, bmin, bmax, uv0, uv1, tint);
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Realtime Plots")) {
        ImGui::BulletText("Move your mouse to change the data!");
        ImGui::BulletText("This example assumes 60 FPS. Higher FPS requires larger buffer size.");
        static ScrollingBuffer sdata1, sdata2;
        static RollingBuffer   rdata1, rdata2;
        ImVec2 mouse = ImGui::GetMousePos();
        static float t = 0;
        t += ImGui::GetIO().DeltaTime;
        sdata1.AddPoint(t, mouse.x * 0.0005f);
        rdata1.AddPoint(t, mouse.x * 0.0005f);
        sdata2.AddPoint(t, mouse.y * 0.0005f);
        rdata2.AddPoint(t, mouse.y * 0.0005f);

        static float history = 10.0f;
        ImGui::SliderFloat("History",&history,1,30,"%.1f s");
        rdata1.Span = history;
        rdata2.Span = history;

        static ImPlotAxisFlags flags = ImPlotAxisFlags_NoTickLabels;
        ImPlot::SetNextPlotLimitsX(t - history, t, ImGuiCond_Always);
        ImPlot::SetNextPlotLimitsY(0,1);
        if (ImPlot::BeginPlot("##Scrolling", NULL, NULL, ImVec2(-1,150), 0, flags, flags)) {
            ImPlot::SetNextFillStyle(IMPLOT_AUTO_COL,0.5f);
            ImPlot::PlotShaded("Mouse X", &sdata1.Data[0].x, &sdata1.Data[0].y, sdata1.Data.size(), -INFINITY, sdata1.Offset, 2 * sizeof(float));
            ImPlot::PlotLine("Mouse Y", &sdata2.Data[0].x, &sdata2.Data[0].y, sdata2.Data.size(), sdata2.Offset, 2*sizeof(float));
            ImPlot::EndPlot();
        }
        ImPlot::SetNextPlotLimitsX(0, history, ImGuiCond_Always);
        ImPlot::SetNextPlotLimitsY(0,1);
        if (ImPlot::BeginPlot("##Rolling", NULL, NULL, ImVec2(-1,150), 0, flags, flags)) {
            ImPlot::PlotLine("Mouse X", &rdata1.Data[0].x, &rdata1.Data[0].y, rdata1.Data.size(), 0, 2 * sizeof(float));
            ImPlot::PlotLine("Mouse Y", &rdata2.Data[0].x, &rdata2.Data[0].y, rdata2.Data.size(), 0, 2 * sizeof(float));
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Markers and Text")) {
        static float mk_size = ImPlot::GetStyle().MarkerSize;
        static float mk_weight = ImPlot::GetStyle().MarkerWeight;
        ImGui::DragFloat("Marker Size",&mk_size,0.1f,2.0f,10.0f,"%.2f px");
        ImGui::DragFloat("Marker Weight", &mk_weight,0.05f,0.5f,3.0f,"%.2f px");

        ImPlot::SetNextPlotLimits(0, 10, 0, 12);
        if (ImPlot::BeginPlot("##MarkerStyles", NULL, NULL, ImVec2(-1,0), ImPlotFlags_CanvasOnly, ImPlotAxisFlags_NoDecorations, ImPlotAxisFlags_NoDecorations)) {
            ImS8 xs[2] = {1,4};
            ImS8 ys[2] = {10,11};

            // filled markers
            for (int m = 0; m < ImPlotMarker_COUNT; ++m) {
                ImGui::PushID(m);
                ImPlot::SetNextMarkerStyle(m, mk_size, IMPLOT_AUTO_COL, mk_weight);
                ImPlot::PlotLine("##Filled", xs, ys, 2);
                ImGui::PopID();
                ys[0]--; ys[1]--;
            }
            xs[0] = 6; xs[1] = 9; ys[0] = 10; ys[1] = 11;
            // open markers
            for (int m = 0; m < ImPlotMarker_COUNT; ++m) {
                ImGui::PushID(m);
                ImPlot::SetNextMarkerStyle(m, mk_size, ImVec4(0,0,0,0), mk_weight);
                ImPlot::PlotLine("##Open", xs, ys, 2);
                ImGui::PopID();
                ys[0]--; ys[1]--;
            }

            ImPlot::PlotText("Filled Markers", 2.5f, 6.0f);
            ImPlot::PlotText("Open Markers",   7.5f, 6.0f);

            ImPlot::PushStyleColor(ImPlotCol_InlayText, ImVec4(1,0,1,1));
            ImPlot::PlotText("Vertical Text", 5.0f, 6.0f, true);
            ImPlot::PopStyleColor();

            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Log Scale")) {
        static double xs[1001], ys1[1001], ys2[1001], ys3[1001];
        for (int i = 0; i < 1001; ++i) {
            xs[i]  = i*0.1f;
            ys1[i] = sin(xs[i]) + 1;
            ys2[i] = log(xs[i]);
            ys3[i] = pow(10.0, xs[i]);
        }
        ImGui::BulletText("Open the plot context menu (right click) to change scales.");

        ImPlot::SetNextPlotLimits(0.1, 100, 0, 10);
        if (ImPlot::BeginPlot("Log Plot", NULL, NULL, ImVec2(-1,0), 0, ImPlotAxisFlags_LogScale )) {
            ImPlot::PlotLine("f(x) = x",        xs, xs,  1001);
            ImPlot::PlotLine("f(x) = sin(x)+1", xs, ys1, 1001);
            ImPlot::PlotLine("f(x) = log(x)",   xs, ys2, 1001);
            ImPlot::PlotLine("f(x) = 10^x",     xs, ys3, 21);
            ImPlot::EndPlot();
        }
    }
    if (ImGui::CollapsingHeader("Time Formatted Axes")) {

        static double t_min = 1609459200; // 01/01/2021 @ 12:00:00am (UTC)
        static double t_max = 1640995200; // 01/01/2022 @ 12:00:00am (UTC)

        ImGui::BulletText("When ImPlotAxisFlags_Time is enabled on the X-Axis, values are interpreted as\n"
                          "UNIX timestamps in seconds and axis labels are formated as date/time.");
        ImGui::BulletText("By default, labels are in UTC time but can be set to use local time instead.");

        ImGui::Checkbox("Local Time",&ImPlot::GetStyle().UseLocalTime);
        ImGui::SameLine();
        ImGui::Checkbox("ISO 8601",&ImPlot::GetStyle().UseISO8601);
        ImGui::SameLine();
        ImGui::Checkbox("24 Hour Clock",&ImPlot::GetStyle().Use24HourClock);

        static HugeTimeData* data = NULL;
        if (data == NULL) {
            ImGui::SameLine();
            if (ImGui::Button("Generate Huge Data (~500MB!)")) {
                static HugeTimeData sdata(t_min);
                data = &sdata;
            }
        }

        ImPlot::SetNextPlotLimits(t_min,t_max,0,1);
        if (ImPlot::BeginPlot("##Time", NULL, NULL, ImVec2(-1,0), 0, ImPlotAxisFlags_Time)) {
            if (data != NULL) {
                // downsample our data
                int downsample = (int)ImPlot::GetPlotLimits().X.Size() / 1000 + 1;
                int start = (int)(ImPlot::GetPlotLimits().X.Min - t_min);
                start = start < 0 ? 0 : start > HugeTimeData::Size - 1 ? HugeTimeData::Size - 1 : start;
                int end = (int)(ImPlot::GetPlotLimits().X.Max - t_min) + 1000;
                end = end < 0 ? 0 : end > HugeTimeData::Size - 1 ? HugeTimeData::Size - 1 : end;
                int size = (end - start)/downsample;
                // plot it
                ImPlot::PlotLine("Time Series", &data->Ts[start], &data->Ys[start], size, 0, sizeof(double)*downsample);
            }
            // plot time now
            double t_now = (double)time(0);
            double y_now = HugeTimeData::GetY(t_now);
            ImPlot::PlotScatter("Now",&t_now,&y_now,1);
            ImPlot::Annotate(t_now,y_now,ImVec2(10,10),ImPlot::GetLastItemColor(),"Now");
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Multiple Y-Axes")) {
        static float xs[1001], xs2[1001], ys1[1001], ys2[1001], ys3[1001];
        for (int i = 0; i < 1001; ++i) {
            xs[i]  = (i*0.1f);
            ys1[i] = sinf(xs[i]) * 3 + 1;
            ys2[i] = cosf(xs[i]) * 0.2f + 0.5f;
            ys3[i] = sinf(xs[i]+0.5f) * 100 + 200;
            xs2[i] = xs[i] + 10.0f;
        }
        static bool y2_axis = true;
        static bool y3_axis = true;
        ImGui::Checkbox("Y-Axis 2", &y2_axis);
        ImGui::SameLine();
        ImGui::Checkbox("Y-Axis 3", &y3_axis);
        ImGui::SameLine();

        // you can fit axes programatically
        ImGui::SameLine(); if (ImGui::Button("Fit X"))  ImPlot::FitNextPlotAxes(true, false, false, false);
        ImGui::SameLine(); if (ImGui::Button("Fit Y"))  ImPlot::FitNextPlotAxes(false, true, false, false);
        ImGui::SameLine(); if (ImGui::Button("Fit Y2")) ImPlot::FitNextPlotAxes(false, false, true, false);
        ImGui::SameLine(); if (ImGui::Button("Fit Y3")) ImPlot::FitNextPlotAxes(false, false, false, true);

        ImPlot::SetNextPlotLimits(0.1, 100, 0, 10);
        ImPlot::SetNextPlotLimitsY(0, 1, ImGuiCond_Once, 1);
        ImPlot::SetNextPlotLimitsY(0, 300, ImGuiCond_Once, 2);
        if (ImPlot::BeginPlot("Multi-Axis Plot", NULL, "Y-Axis 1", ImVec2(-1,0),
                             (y2_axis ? ImPlotFlags_YAxis2 : 0) |
                             (y3_axis ? ImPlotFlags_YAxis3 : 0),
                              ImPlotAxisFlags_None, ImPlotAxisFlags_None, ImPlotAxisFlags_NoGridLines, ImPlotAxisFlags_NoGridLines,
                              "Y-Axis 2", "Y-Axis 3")) {
            ImPlot::PlotLine("f(x) = x", xs, xs, 1001);
            ImPlot::PlotLine("f(x) = sin(x)*3+1", xs, ys1, 1001);
            if (y2_axis) {
                ImPlot::SetPlotYAxis(ImPlotYAxis_2);
                ImPlot::PlotLine("f(x) = cos(x)*.2+.5 (Y2)", xs, ys2, 1001);
            }
            if (y3_axis) {
                ImPlot::SetPlotYAxis(ImPlotYAxis_3);
                ImPlot::PlotLine("f(x) = sin(x+.5)*100+200 (Y3)", xs2, ys3, 1001);
            }
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Linked Axes")) {
        static double xmin = 0, xmax = 1, ymin = 0, ymax = 1;
        static bool linkx = true, linky = true;
        int data[2] = {0,1};
        ImGui::Checkbox("Link X", &linkx);
        ImGui::SameLine();
        ImGui::Checkbox("Link Y", &linky);
        ImPlot::LinkNextPlotLimits(linkx ? &xmin : NULL , linkx ? &xmax : NULL, linky ? &ymin : NULL, linky ? &ymax : NULL);
        if (ImPlot::BeginPlot("Plot A")) {
            ImPlot::PlotLine("Line",data,2);
            ImPlot::EndPlot();
        }
        ImPlot::LinkNextPlotLimits(linkx ? &xmin : NULL , linkx ? &xmax : NULL, linky ? &ymin : NULL, linky ? &ymax : NULL);
        if (ImPlot::BeginPlot("Plot B")) {
            ImPlot::PlotLine("Line",data,2);
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Equal Axes")) {
        static double xs[1000], ys[1000];
        for (int i = 0; i < 1000; ++i) {
            double angle = i * 2 * PI / 999.0;
            xs[i] = cos(angle); ys[i] = sin(angle);
        }
        if (ImPlot::BeginPlot("",0,0,ImVec2(-1,0),ImPlotFlags_Equal)) {
            ImPlot::PlotLine("Circle",xs,ys,1000);
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Auto-Fitting Data")) {

        ImGui::BulletText("The Y-axis has been configured to auto-fit to only the data visible in X-axis range.");
        ImGui::BulletText("Zoom and pan the X-axis. Disable Stems to see a difference in fit.");
        ImGui::BulletText("If ImPlotAxisFlags_RangeFit is disabled, the axis will fit ALL data.");

        static ImPlotAxisFlags xflags = ImPlotAxisFlags_None;
        static ImPlotAxisFlags yflags = ImPlotAxisFlags_AutoFit|ImPlotAxisFlags_RangeFit;

        ImGui::TextUnformatted("X: "); ImGui::SameLine();
        ImGui::CheckboxFlags("ImPlotAxisFlags_AutoFit##X", (unsigned int*)&xflags, ImPlotAxisFlags_AutoFit); ImGui::SameLine();
        ImGui::CheckboxFlags("ImPlotAxisFlags_RangeFit##X", (unsigned int*)&xflags, ImPlotAxisFlags_RangeFit);

        ImGui::TextUnformatted("Y: "); ImGui::SameLine();
        ImGui::CheckboxFlags("ImPlotAxisFlags_AutoFit##Y", (unsigned int*)&yflags, ImPlotAxisFlags_AutoFit); ImGui::SameLine();
        ImGui::CheckboxFlags("ImPlotAxisFlags_RangeFit##Y", (unsigned int*)&yflags, ImPlotAxisFlags_RangeFit);

        static double data[101];
        srand(0);
        for (int i = 0; i < 101; ++i)
            data[i] = 1 + sin(i/10.0f);

        if (ImPlot::BeginPlot("##DataFitting","X","Y",ImVec2(-1,0),0,xflags,yflags)) {
            ImPlot::PlotLine("Line",data,101);
            ImPlot::PlotStems("Stems",data,101);
            ImPlot::EndPlot();
        };
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Querying")) {
        static ImVector<ImPlotPoint> data;
        static ImPlotLimits range, query, select;

        ImGui::BulletText("Ctrl + click in the plot area to draw points.");
        ImGui::BulletText("Middle click (or Ctrl + right click) and drag to create a query rect.");
        ImGui::Indent();
            ImGui::BulletText("Hold Alt to expand query horizontally.");
            ImGui::BulletText("Hold Shift to expand query vertically.");
            ImGui::BulletText("The query rect can be dragged after it's created.");
        ImGui::Unindent();

        if (ImPlot::BeginPlot("##Drawing", NULL, NULL, ImVec2(-1,0), ImPlotFlags_Query, ImPlotAxisFlags_NoDecorations, ImPlotAxisFlags_NoDecorations)) {
            if (ImPlot::IsPlotHovered() && ImGui::IsMouseClicked(0) && ImGui::GetIO().KeyCtrl) {
                ImPlotPoint pt = ImPlot::GetPlotMousePos();
                data.push_back(pt);
            }
            if (data.size() > 0)
                ImPlot::PlotScatter("Points", &data[0].x, &data[0].y, data.size(), 0, 2 * sizeof(double));
            if (ImPlot::IsPlotQueried() && data.size() > 0) {
                ImPlotLimits range2 = ImPlot::GetPlotQuery();
                int cnt = 0;
                ImPlotPoint avg;
                for (int i = 0; i < data.size(); ++i) {
                    if (range2.Contains(data[i].x, data[i].y)) {
                        avg.x += data[i].x;
                        avg.y += data[i].y;
                        cnt++;
                    }
                }
                if (cnt > 0) {
                    avg.x = avg.x / cnt;
                    avg.y = avg.y / cnt;
                    ImPlot::SetNextMarkerStyle(ImPlotMarker_Square);
                    ImPlot::PlotScatter("Average", &avg.x, &avg.y, 1);
                }
            }
            range  = ImPlot::GetPlotLimits();
            query  = ImPlot::GetPlotQuery();
            select = ImPlot::GetPlotSelection();
            ImPlot::EndPlot();
        }
        ImGui::Text("Limits: [%g,%g,%g,%g]", range.X.Min, range.X.Max, range.Y.Min, range.Y.Max);
        ImGui::Text("Query: [%g,%g,%g,%g]", query.X.Min, query.X.Max, query.Y.Min, query.Y.Max);
        ImGui::Text("Selection: [%g,%g,%g,%g]", select.X.Min, select.X.Max, select.Y.Min, select.Y.Max);

        ImGui::Separator();

        // mimic's soulthread's imgui_plot demo
        static float x_data[512];
        static float y_data1[512];
        static float y_data2[512];
        static float y_data3[512];
        static float sampling_freq = 44100;
        static float freq = 500;
        for (size_t i = 0; i < 512; ++i) {
            const float t = i / sampling_freq;
            x_data[i] = t;
            const float arg = 2 * 3.14f * freq * t;
            y_data1[i] = sinf(arg);
            y_data2[i] = y_data1[i] * -0.6f + sinf(2 * arg) * 0.4f;
            y_data3[i] = y_data2[i] * -0.6f + sinf(3 * arg) * 0.4f;
        }
        ImGui::BulletText("Query the first plot to render a subview in the second plot (see above for controls).");
        ImPlotAxisFlags flags = ImPlotAxisFlags_NoTickLabels;
        static bool use_selection = false;
        ImGui::Checkbox("Use Box Selection",&use_selection);
        bool is_viewed = false;
        ImPlotLimits view;
        ImPlot::SetNextPlotLimits(0,0.01,-1,1);
        if (ImPlot::BeginPlot("##View1",NULL,NULL,ImVec2(-1,150), ImPlotFlags_Query, flags, flags)) {
            ImPlot::PlotLine("Signal 1", x_data, y_data1, 512);
            ImPlot::PlotLine("Signal 2", x_data, y_data2, 512);
            ImPlot::PlotLine("Signal 3", x_data, y_data3, 512);
            is_viewed = use_selection ? ImPlot::IsPlotSelected()   : ImPlot::IsPlotQueried();
            view      = use_selection ? ImPlot::GetPlotSelection() : ImPlot::GetPlotQuery();
            ImPlot::EndPlot();
        }
        ImPlot::SetNextPlotLimits(view.X.Min, view.X.Max, view.Y.Min, view.Y.Max, ImGuiCond_Always);
        if (ImPlot::BeginPlot("##View2",NULL,NULL,ImVec2(-1,150), ImPlotFlags_CanvasOnly, ImPlotAxisFlags_NoDecorations, ImPlotAxisFlags_NoDecorations)) {
            if (is_viewed) {
                ImPlot::PlotLine("Signal 1", x_data, y_data1, 512);
                ImPlot::PlotLine("Signal 2", x_data, y_data2, 512);
                ImPlot::PlotLine("Signal 3", x_data, y_data3, 512);
            }
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Legend")) {
        static ImPlotLocation loc = ImPlotLocation_East;
        static bool h = false; static bool o = true;
        ImGui::CheckboxFlags("North", (unsigned int*)&loc, ImPlotLocation_North); ImGui::SameLine();
        ImGui::CheckboxFlags("South", (unsigned int*)&loc, ImPlotLocation_South); ImGui::SameLine();
        ImGui::CheckboxFlags("West",  (unsigned int*)&loc, ImPlotLocation_West);  ImGui::SameLine();
        ImGui::CheckboxFlags("East",  (unsigned int*)&loc, ImPlotLocation_East);  ImGui::SameLine();
        ImGui::Checkbox("Horizontal##2", &h); ImGui::SameLine();
        ImGui::Checkbox("Outside", &o);

        ImGui::SliderFloat2("LegendPadding", (float*)&GetStyle().LegendPadding, 0.0f, 20.0f, "%.0f");
        ImGui::SliderFloat2("LegendInnerPadding", (float*)&GetStyle().LegendInnerPadding, 0.0f, 10.0f, "%.0f");
        ImGui::SliderFloat2("LegendSpacing", (float*)&GetStyle().LegendSpacing, 0.0f, 5.0f, "%.0f");

        if (ImPlot::BeginPlot("##Legend","x","y",ImVec2(-1,0))) {
            ImPlot::SetLegendLocation(loc, h ? ImPlotOrientation_Horizontal : ImPlotOrientation_Vertical, o);
            static MyImPlot::WaveData data1(0.001, 0.2, 2, 0.75);
            static MyImPlot::WaveData data2(0.001, 0.2, 4, 0.25);
            static MyImPlot::WaveData data3(0.001, 0.2, 6, 0.5);
            ImPlot::PlotLineG("Item 1", MyImPlot::SineWave, &data1, 1000);         // "Item 1" added to legend
            ImPlot::PlotLineG("Item 2##IDText", MyImPlot::SawWave, &data2, 1000);  // "Item 2" added to legend, text after ## used for ID only
            ImPlot::PlotLineG("##NotListed", MyImPlot::SawWave, &data3, 1000);     // plotted, but not added to legend
            ImPlot::PlotLineG("Item 3", MyImPlot::SineWave, &data1, 1000);         // "Item 3" added to legend
            ImPlot::PlotLineG("Item 3", MyImPlot::SawWave,  &data2, 1000);         // combined with previous "Item 3"
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Drag Lines and Points")) {
        ImGui::BulletText("Click and drag the horizontal and vertical lines.");
        static double x1 = 0.2;
        static double x2 = 0.8;
        static double y1 = 0.25;
        static double y2 = 0.75;
        static double f = 0.1;
        static bool show_labels = true;
        ImGui::Checkbox("Show Labels##1",&show_labels);
        ImPlot::SetNextPlotLimits(0,1,0,1);
        if (ImPlot::BeginPlot("##guides",0,0,ImVec2(-1,0),ImPlotFlags_YAxis2)) {
            ImPlot::DragLineX("x1",&x1,show_labels);
            ImPlot::DragLineX("x2",&x2,show_labels);
            ImPlot::DragLineY("y1",&y1,show_labels);
            ImPlot::DragLineY("y2",&y2,show_labels);
            double xs[1000], ys[1000];
            for (int i = 0; i < 1000; ++i) {
                xs[i] = (x2+x1)/2+fabs(x2-x1)*(i/1000.0f - 0.5f);
                ys[i] = (y1+y2)/2+fabs(y2-y1)/2*sin(f*i/10);
            }
            ImPlot::PlotLine("Interactive Data", xs, ys, 1000);
            ImPlot::SetPlotYAxis(ImPlotYAxis_2);
            ImPlot::DragLineY("f",&f,show_labels,ImVec4(1,0.5f,1,1));
            ImPlot::EndPlot();
        }
        ImGui::BulletText("Click and drag any point.");
        ImGui::Checkbox("Show Labels##2",&show_labels);
        ImPlotAxisFlags flags = ImPlotAxisFlags_NoTickLabels | ImPlotAxisFlags_NoTickMarks;
        ImPlot::SetNextPlotLimits(0,1,0,1);
        if (ImPlot::BeginPlot("##Bezier",0,0,ImVec2(-1,0),ImPlotFlags_CanvasOnly,flags,flags)) {
            static ImPlotPoint P[] = {ImPlotPoint(.05f,.05f), ImPlotPoint(0.2,0.4),  ImPlotPoint(0.8,0.6),  ImPlotPoint(.95f,.95f)};
            static ImPlotPoint B[100];
            for (int i = 0; i < 100; ++i) {
                double t  = i / 99.0;
                double u  = 1 - t;
                double w1 = u*u*u;
                double w2 = 3*u*u*t;
                double w3 = 3*u*t*t;
                double w4 = t*t*t;
                B[i] = ImPlotPoint(w1*P[0].x + w2*P[1].x + w3*P[2].x + w4*P[3].x, w1*P[0].y + w2*P[1].y + w3*P[2].y + w4*P[3].y);
            }
            ImPlot::SetNextLineStyle(ImVec4(0,0.9f,0,1), 2);
            ImPlot::PlotLine("##bez",&B[0].x, &B[0].y, 100, 0, sizeof(ImPlotPoint));
            ImPlot::SetNextLineStyle(ImVec4(1,0.5f,1,1));
            ImPlot::PlotLine("##h1",&P[0].x, &P[0].y, 2, 0, sizeof(ImPlotPoint));
            ImPlot::SetNextLineStyle(ImVec4(0,0.5f,1,1));
            ImPlot::PlotLine("##h2",&P[2].x, &P[2].y, 2, 0, sizeof(ImPlotPoint));
            ImPlot::DragPoint("P0",&P[0].x,&P[0].y, show_labels, ImVec4(0,0.9f,0,1));
            ImPlot::DragPoint("P1",&P[1].x,&P[1].y, show_labels, ImVec4(1,0.5f,1,1));
            ImPlot::DragPoint("P2",&P[2].x,&P[2].y, show_labels, ImVec4(0,0.5f,1,1));
            ImPlot::DragPoint("P3",&P[3].x,&P[3].y, show_labels, ImVec4(0,0.9f,0,1));
            ImPlot::EndPlot();
        }
    }
    if (ImGui::CollapsingHeader("Annotations")) {
        static bool clamp = false;
        ImGui::Checkbox("Clamp",&clamp);
        ImPlot::SetNextPlotLimits(0,2,0,1);
        if (ImPlot::BeginPlot("##Annotations")) {

            static float p[] = {0.25f, 0.25f, 0.75f, 0.75f, 0.25f};
            ImPlot::PlotScatter("##Points",&p[0],&p[1],4);
            ImVec4 col = GetLastItemColor();
            clamp ? ImPlot::AnnotateClamped(0.25,0.25,ImVec2(-15,15),col,"BL") : ImPlot::Annotate(0.25,0.25,ImVec2(-15,15),col,"BL");
            clamp ? ImPlot::AnnotateClamped(0.75,0.25,ImVec2(15,15),col,"BR") : ImPlot::Annotate(0.75,0.25,ImVec2(15,15),col,"BR");
            clamp ? ImPlot::AnnotateClamped(0.75,0.75,ImVec2(15,-15),col,"TR") : ImPlot::Annotate(0.75,0.75,ImVec2(15,-15),col,"TR");
            clamp ? ImPlot::AnnotateClamped(0.25,0.75,ImVec2(-15,-15),col,"TL") : ImPlot::Annotate(0.25,0.75,ImVec2(-15,-15),col,"TL");
            clamp ? ImPlot::AnnotateClamped(0.5,0.5,ImVec2(0,0),col,"Center") : ImPlot::Annotate(0.5,0.5,ImVec2(0,0),col,"Center");

            float bx[] = {1.2f,1.5f,1.8f};
            float by[] = {0.25f, 0.5f, 0.75f};
            ImPlot::PlotBars("##Bars",bx,by,3,0.2);
            for (int i = 0; i < 3; ++i)
                ImPlot::Annotate(bx[i],by[i],ImVec2(0,-5),"B[%d]=%.2f",i,by[i]);
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Drag and Drop")) {
        ImGui::BulletText("Drag/drop items from the left column.");
        ImGui::BulletText("Drag/drop items between plots.");
        ImGui::Indent();
        ImGui::BulletText("Plot 1 Targets: Plot, Y-Axes, Legend");
        ImGui::BulletText("Plot 1 Sources: Legend Items");
        ImGui::BulletText("Plot 2 Targets: Plot, X-Axis, Y-Axis");
        ImGui::BulletText("Plot 2 Sources: Plot, X-Axis, Y-Axis (hold Ctrl)");
        ImGui::Unindent();

        // convenience struct to manage DND items; do this however you like
        struct MyDndItem {
            int              Idx;
            int              Plt;
            int              Yax;
            char             Label[16];
            ImVector<ImVec2> Data;
            ImVec4           Color;
            MyDndItem()        {
                static int i = 0;
                Idx = i++;
                Plt = 0;
                Yax = ImPlotYAxis_1;
                sprintf(Label, "%02d Hz", Idx+1);
                Color = RandomColor();
                Data.reserve(1001);
                for (int k = 0; k < 1001; ++k) {
                    float t = k * 1.0f / 999;
                    Data.push_back(ImVec2(t, 0.5f + 0.5f * sinf(2*3.14f*t*(Idx+1))));
                }
            }
            void Reset() { Plt = 0; Yax = ImPlotYAxis_1; }
        };

        const int         k_dnd = 20;
        static MyDndItem  dnd[k_dnd];
        static MyDndItem* dndx = NULL; // for plot 2
        static MyDndItem* dndy = NULL; // for plot 2

        // child window to serve as initial source for our DND items
        ImGui::BeginChild("DND_LEFT",ImVec2(100,400));
        if (ImGui::Button("Reset Data", ImVec2(100, 0))) {
            for (int k = 0; k < k_dnd; ++k)
                dnd[k].Reset();
            dndx = dndy = NULL;
        }
        for (int k = 0; k < k_dnd; ++k) {
            if (dnd[k].Plt > 0)
                continue;
            ImPlot::ItemIcon(dnd[k].Color); ImGui::SameLine();
            ImGui::Selectable(dnd[k].Label, false, 0, ImVec2(100, 0));
            if (ImGui::BeginDragDropSource(ImGuiDragDropFlags_None)) {
                ImGui::SetDragDropPayload("MY_DND", &k, sizeof(int));
                ImPlot::ItemIcon(dnd[k].Color); ImGui::SameLine();
                ImGui::TextUnformatted(dnd[k].Label);
                ImGui::EndDragDropSource();
            }
        }
        ImGui::EndChild();
        if (ImGui::BeginDragDropTarget()) {
            if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("MY_DND")) {
                int i = *(int*)payload->Data; dnd[i].Reset();
            }
            ImGui::EndDragDropTarget();
        }

        ImGui::SameLine();
        ImGui::BeginChild("DND_RIGHT",ImVec2(-1,400));
        // plot 1 (time series)
        ImPlotAxisFlags flags = ImPlotAxisFlags_NoTickLabels | ImPlotAxisFlags_NoGridLines;
        if (ImPlot::BeginPlot("##DND1", NULL, "[drop here]", ImVec2(-1,195), ImPlotFlags_YAxis2 | ImPlotFlags_YAxis3, flags | ImPlotAxisFlags_Lock, flags, flags, flags, "[drop here]", "[drop here]")) {
            for (int k = 0; k < k_dnd; ++k) {
                if (dnd[k].Plt == 1 && dnd[k].Data.size() > 0) {
                    ImPlot::SetPlotYAxis(dnd[k].Yax);
                    ImPlot::SetNextLineStyle(dnd[k].Color);
                    static char label[32];
                    sprintf(label,"%s (Y%d)", dnd[k].Label, dnd[k].Yax+1);
                    ImPlot::PlotLine(label, &dnd[k].Data[0].x, &dnd[k].Data[0].y, dnd[k].Data.size(), 0, 2 * sizeof(float));
                    // allow legend item labels to be DND sources
                    if (ImPlot::BeginDragDropSourceItem(label)) {
                        ImGui::SetDragDropPayload("MY_DND", &k, sizeof(int));
                        ImPlot::ItemIcon(dnd[k].Color); ImGui::SameLine();
                        ImGui::TextUnformatted(dnd[k].Label);
                        ImPlot::EndDragDropSource();
                    }
                }
            }
            // allow the main plot area to be a DND target
            if (ImPlot::BeginDragDropTarget()) {
                if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("MY_DND")) {
                    int i = *(int*)payload->Data; dnd[i].Plt = 1; dnd[i].Yax = 0;
                }
                ImPlot::EndDragDropTarget();
            }
            // allow each y-axis to be a DND target
            for (int y = 0; y < 3; ++y) {
                if (ImPlot::BeginDragDropTargetY(y)) {
                    if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("MY_DND")) {
                        int i = *(int*)payload->Data; dnd[i].Plt = 1; dnd[i].Yax = y;
                    }
                    ImPlot::EndDragDropTarget();
                }
            }
            // allow the legend to be a DND target
            if (ImPlot::BeginDragDropTargetLegend()) {
                if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("MY_DND")) {
                    int i = *(int*)payload->Data; dnd[i].Plt = 1; dnd[i].Yax = 0;
                }
                ImPlot::EndDragDropTarget();
            }
            ImPlot::EndPlot();
        }
        // plot 2 (Lissajous)
        ImPlot::PushStyleColor(ImPlotCol_XAxis, dndx == NULL ? ImPlot::GetStyle().Colors[ImPlotCol_XAxis] : dndx->Color);
        ImPlot::PushStyleColor(ImPlotCol_YAxis, dndy == NULL ? ImPlot::GetStyle().Colors[ImPlotCol_YAxis] : dndy->Color);
        if (ImPlot::BeginPlot("##DND2", dndx == NULL ? "[drop here]" : dndx->Label, dndy == NULL ? "[drop here]" : dndy->Label, ImVec2(-1,195), 0, flags, flags )) {
            if (dndx != NULL && dndy != NULL) {
                ImVec4 mixed((dndx->Color.x + dndy->Color.x)/2,(dndx->Color.y + dndy->Color.y)/2,(dndx->Color.z + dndy->Color.z)/2,(dndx->Color.w + dndy->Color.w)/2);
                ImPlot::SetNextLineStyle(mixed);
                ImPlot::PlotLine("##dndxy", &dndx->Data[0].y, &dndy->Data[0].y, dndx->Data.size(), 0, 2 * sizeof(float));
            }
            // allow the x-axis to be a DND target
            if (ImPlot::BeginDragDropTargetX()) {
                if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("MY_DND")) {
                    int i = *(int*)payload->Data; dndx = &dnd[i];
                }
                ImPlot::EndDragDropTarget();
            }
            // allow the x-axis to be a DND source
            if (dndx != NULL && ImPlot::BeginDragDropSourceX()) {
                ImGui::SetDragDropPayload("MY_DND", &dndx->Idx, sizeof(int));
                ImPlot::ItemIcon(dndx->Color); ImGui::SameLine();
                ImGui::TextUnformatted(dndx->Label);
                ImPlot::EndDragDropSource();
            }
            // allow the y-axis to be a DND target
            if (ImPlot::BeginDragDropTargetY()) {
                if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("MY_DND")) {
                    int i = *(int*)payload->Data; dndy = &dnd[i];
                }
                ImPlot::EndDragDropTarget();
            }
            // allow the y-axis to be a DND source
            if (dndy != NULL && ImPlot::BeginDragDropSourceY()) {
                ImGui::SetDragDropPayload("MY_DND", &dndy->Idx, sizeof(int));
                ImPlot::ItemIcon(dndy->Color); ImGui::SameLine();
                ImGui::TextUnformatted(dndy->Label);
                ImPlot::EndDragDropSource();
            }
            // allow the plot area to be a DND target
            if (ImPlot::BeginDragDropTarget()) {
                if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("MY_DND")) {
                    int i = *(int*)payload->Data; dndx = dndy = &dnd[i];
                }
            }
            // allow the plot area to be a DND source
            if (ImPlot::BeginDragDropSource()) {
                ImGui::TextUnformatted("Yes, you can\ndrag this!");
                ImPlot::EndDragDropSource();
            }
            ImPlot::EndPlot();
        }
        ImPlot::PopStyleColor(2);
        ImGui::EndChild();
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Tables")) {
#ifdef IMGUI_HAS_TABLE
        static ImGuiTableFlags flags = ImGuiTableFlags_BordersOuter | ImGuiTableFlags_BordersV | ImGuiTableFlags_RowBg;
        static bool anim = true;
        static int offset = 0;
        ImGui::BulletText("Plots can be used inside of ImGui tables.");
        ImGui::Checkbox("Animate",&anim);
        if (anim)
            offset = (offset + 1) % 100;
        if (ImGui::BeginTable("##table", 3, flags, ImVec2(-1,0))) {
            ImGui::TableSetupColumn("Electrode", ImGuiTableColumnFlags_WidthFixed, 75.0f);
            ImGui::TableSetupColumn("Voltage", ImGuiTableColumnFlags_WidthFixed, 75.0f);
            ImGui::TableSetupColumn("EMG Signal");
            ImGui::TableHeadersRow();
            ImPlot::PushColormap(ImPlotColormap_Cool);
            for (int row = 0; row < 10; row++) {
                ImGui::TableNextRow();
                static float data[100];
                srand(row);
                for (int i = 0; i < 100; ++i)
                    data[i] = RandomRange(0.0f,10.0f);
                ImGui::TableSetColumnIndex(0);
                ImGui::Text("EMG %d", row);
                ImGui::TableSetColumnIndex(1);
                ImGui::Text("%.3f V", data[offset]);
                ImGui::TableSetColumnIndex(2);
                ImGui::PushID(row);
                MyImPlot::Sparkline("##spark",data,100,0,11.0f,offset,ImPlot::GetColormapColor(row),ImVec2(-1, 35));
                ImGui::PopID();
            }
            ImPlot::PopColormap();
            ImGui::EndTable();
        }
#else
    ImGui::BulletText("You need to merge the ImGui 'tables' branch for this section.");
#endif
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Offset and Stride")) {
        static const int k_circles    = 11;
        static const int k_points_per = 50;
        static const int k_size       = 2 * k_points_per * k_circles;
        static double interleaved_data[k_size];
        for (int p = 0; p < k_points_per; ++p) {
            for (int c = 0; c < k_circles; ++c) {
                double r = (double)c / (k_circles - 1) * 0.2 + 0.2;
                interleaved_data[p*2*k_circles + 2*c + 0] = 0.5 + r * cos((double)p/k_points_per * 6.28);
                interleaved_data[p*2*k_circles + 2*c + 1] = 0.5 + r * sin((double)p/k_points_per * 6.28);
            }
        }
        static int offset = 0;
        ImGui::BulletText("Offsetting is useful for realtime plots (see above) and circular buffers.");
        ImGui::BulletText("Striding is useful for interleaved data (e.g. audio) or plotting structs.");
        ImGui::BulletText("Here, all circle data is stored in a single interleaved buffer:");
        ImGui::BulletText("[c0.x0 c0.y0 ... cn.x0 cn.y0 c0.x1 c0.y1 ... cn.x1 cn.y1 ... cn.xm cn.ym]");
        ImGui::BulletText("The offset value indicates which circle point index is considered the first.");
        ImGui::BulletText("Offsets can be negative and/or larger than the actual data count.");
        ImGui::SliderInt("Offset", &offset, -2*k_points_per, 2*k_points_per);
        if (ImPlot::BeginPlot("##strideoffset",0,0,ImVec2(-1,0), ImPlotFlags_Equal)) {
            ImPlot::PushColormap(ImPlotColormap_Jet);
            char buff[16];
            for (int c = 0; c < k_circles; ++c) {
                sprintf(buff, "Circle %d", c);
                ImPlot::PlotLine(buff, &interleaved_data[c*2 + 0], &interleaved_data[c*2 + 1], k_points_per, offset, 2*k_circles*sizeof(double));
            }
            ImPlot::EndPlot();
            ImPlot::PopColormap();
        }
        // offset++; uncomment for animation!
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Custom Data and Getters")) {
        ImGui::BulletText("You can plot custom structs using the stride feature.");
        ImGui::BulletText("Most plotters can also be passed a function pointer for getting data.");
        ImGui::Indent();
            ImGui::BulletText("You can optionally pass user data to be given to your getter function.");
            ImGui::BulletText("C++ lambdas can be passed as function pointers as well!");
        ImGui::Unindent();

        MyImPlot::Vector2f vec2_data[2] = { MyImPlot::Vector2f(0,0), MyImPlot::Vector2f(1,1) };

        if (ImPlot::BeginPlot("##Custom Data")) {

            // custom structs using stride example:
            ImPlot::PlotLine("Vector2f", &vec2_data[0].x, &vec2_data[0].y, 2, 0, sizeof(MyImPlot::Vector2f) /* or sizeof(float) * 2 */);

            // custom getter example 1:
            ImPlot::PlotLineG("Spiral", MyImPlot::Spiral, NULL, 1000);

            // custom getter example 2:
            static MyImPlot::WaveData data1(0.001, 0.2, 2, 0.75);
            static MyImPlot::WaveData data2(0.001, 0.2, 4, 0.25);
            ImPlot::PlotLineG("Waves", MyImPlot::SineWave, &data1, 1000);
            ImPlot::PlotLineG("Waves", MyImPlot::SawWave, &data2, 1000);
            ImPlot::PushStyleVar(ImPlotStyleVar_FillAlpha, 0.25f);
            ImPlot::PlotShadedG("Waves", MyImPlot::SineWave, &data1, MyImPlot::SawWave, &data2, 1000);
            ImPlot::PopStyleVar();

            // you can also pass C++ lambdas:
            // auto lamda = [](void* data, int idx) { ... return ImPlotPoint(x,y); };
            // ImPlot::PlotLine("My Lambda", lambda, data, 1000);

            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Custom Ticks##")) {
        static bool custom_fmt    = true;
        static bool custom_ticks  = false;
        static bool custom_labels = true;
        ImGui::Checkbox("Show Custom Format", &custom_fmt);
        ImGui::SameLine();
        ImGui::Checkbox("Show Custom Ticks", &custom_ticks);
        if (custom_ticks) {
            ImGui::SameLine();
            ImGui::Checkbox("Show Custom Labels", &custom_labels);
        }
        double pi = 3.14;
        const char* pi_str[] = {"PI"};
        static double yticks[] = {1,3,7,9};
        static const char*  ylabels[] = {"One","Three","Seven","Nine"};
        static double yticks_aux[] = {0.2,0.4,0.6};
        static const char* ylabels_aux[] = {"A","B","C","D","E","F"};
        if (custom_fmt) {
            ImPlot::SetNextPlotFormatX("%g ms");
            ImPlot::SetNextPlotFormatY("%g Hz", ImPlotYAxis_1);
            ImPlot::SetNextPlotFormatY("%g dB", ImPlotYAxis_2);
            ImPlot::SetNextPlotFormatY("%g km", ImPlotYAxis_3);
        }
        if (custom_ticks) {
            ImPlot::SetNextPlotTicksX(&pi,1,custom_labels ? pi_str : NULL, true);
            ImPlot::SetNextPlotTicksY(yticks, 4, custom_labels ? ylabels : NULL, ImPlotYAxis_1);
            ImPlot::SetNextPlotTicksY(yticks_aux, 3, custom_labels ? ylabels_aux : NULL, false, ImPlotYAxis_2);
            ImPlot::SetNextPlotTicksY(0, 1, 6, custom_labels ? ylabels_aux : NULL, false, ImPlotYAxis_3);
        }
        ImPlot::SetNextPlotLimits(2.5,5,0,10);
        if (ImPlot::BeginPlot("Custom Ticks", NULL, NULL, ImVec2(-1,0), ImPlotFlags_YAxis2 | ImPlotFlags_YAxis3)) {
            // nothing to see here, just the ticks
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Custom Styles")) {
        ImPlot::PushColormap(ImPlotColormap_Deep);
        // normally you wouldn't change the entire style each frame
        ImPlotStyle backup = ImPlot::GetStyle();
        MyImPlot::StyleSeaborn();
        ImPlot::SetNextPlotLimits(-0.5f, 9.5f, 0, 10);
        if (ImPlot::BeginPlot("seaborn style", "x-axis", "y-axis")) {
            unsigned int lin[10] = {8,8,9,7,8,8,8,9,7,8};
            unsigned int bar[10] = {1,2,5,3,4,1,2,5,3,4};
            unsigned int dot[10] = {7,6,6,7,8,5,6,5,8,7};
            ImPlot::PlotBars("Bars", bar, 10, 0.5f);
            ImPlot::PlotLine("Line", lin, 10);
            ImPlot::NextColormapColor(); // skip green
            ImPlot::PlotScatter("Scatter", dot, 10);
            ImPlot::EndPlot();
        }
        ImPlot::GetStyle() = backup;
        ImPlot::PopColormap();
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Custom Rendering")) {
        if (ImPlot::BeginPlot("##CustomRend")) {
            ImVec2 cntr = ImPlot::PlotToPixels(ImPlotPoint(0.5f,  0.5f));
            ImVec2 rmin = ImPlot::PlotToPixels(ImPlotPoint(0.25f, 0.75f));
            ImVec2 rmax = ImPlot::PlotToPixels(ImPlotPoint(0.75f, 0.25f));
            ImPlot::PushPlotClipRect();
            ImPlot::GetPlotDrawList()->AddCircleFilled(cntr,20,IM_COL32(255,255,0,255),20);
            ImPlot::GetPlotDrawList()->AddRect(rmin, rmax, IM_COL32(128,0,255,255));
            ImPlot::PopPlotClipRect();
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Custom Context Menus")) {
        ImGui::BulletText("You can implement legend context menus to inject per-item controls and widgets.");
        ImGui::BulletText("Right click the legend label/icon to edit custom item attributes.");

        static float  frequency = 0.1f;
        static float  amplitude = 0.5f;
        static ImVec4 color     = ImVec4(1,1,0,1);
        static float  alpha     = 1.0f;
        static bool   line      = false;
        static float  thickness = 1;
        static bool   markers   = false;
        static bool   shaded    = false;

        static float vals[101];
        for (int i = 0; i < 101; ++i)
            vals[i] = amplitude * sinf(frequency * i);

        ImPlot::SetNextPlotLimits(0,100,-1,1);
        if (ImPlot::BeginPlot("Right Click the Legend")) {
            // rendering logic
            ImPlot::PushStyleVar(ImPlotStyleVar_FillAlpha, alpha);
            if (!line) {
                ImPlot::SetNextFillStyle(color);
                ImPlot::PlotBars("Right Click Me", vals, 101);
            }
            else {
                if (markers) ImPlot::SetNextMarkerStyle(ImPlotMarker_Circle);
                ImPlot::SetNextLineStyle(color, thickness);
                ImPlot::PlotLine("Right Click Me", vals, 101);
                if (shaded) ImPlot::PlotShaded("Right Click Me",vals,101);
            }
            ImPlot::PopStyleVar();
            // custom legend context menu
            if (ImPlot::BeginLegendPopup("Right Click Me")) {
                ImGui::SliderFloat("Frequency",&frequency,0,1,"%0.2f");
                ImGui::SliderFloat("Amplitude",&amplitude,0,1,"%0.2f");
                ImGui::Separator();
                ImGui::ColorEdit3("Color",&color.x);
                ImGui::SliderFloat("Transparency",&alpha,0,1,"%.2f");
                ImGui::Checkbox("Line Plot", &line);
                if (line) {
                    ImGui::SliderFloat("Thickness", &thickness, 0, 5);
                    ImGui::Checkbox("Markers", &markers);
                    ImGui::Checkbox("Shaded",&shaded);
                }
                ImPlot::EndLegendPopup();
            }
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    if (ImGui::CollapsingHeader("Custom Plotters and Tooltips")) {
        ImGui::BulletText("You can create custom plotters or extend ImPlot using implot_internal.h.");
		double dates[]  = {1546300800,1546387200,1546473600,1546560000,1546819200,1546905600,1546992000,1547078400,1547164800,1547424000,1547510400,1547596800,1547683200,1547769600,1547942400,1548028800,1548115200,1548201600,1548288000,1548374400,1548633600,1548720000,1548806400,1548892800,1548979200,1549238400,1549324800,1549411200,1549497600,1549584000,1549843200,1549929600,1550016000,1550102400,1550188800,1550361600,1550448000,1550534400,1550620800,1550707200,1550793600,1551052800,1551139200,1551225600,1551312000,1551398400,1551657600,1551744000,1551830400,1551916800,1552003200,1552262400,1552348800,1552435200,1552521600,1552608000,1552867200,1552953600,1553040000,1553126400,1553212800,1553472000,1553558400,1553644800,1553731200,1553817600,1554076800,1554163200,1554249600,1554336000,1554422400,1554681600,1554768000,1554854400,1554940800,1555027200,1555286400,1555372800,1555459200,1555545600,1555632000,1555891200,1555977600,1556064000,1556150400,1556236800,1556496000,1556582400,1556668800,1556755200,1556841600,1557100800,1557187200,1557273600,1557360000,1557446400,1557705600,1557792000,1557878400,1557964800,1558051200,1558310400,1558396800,1558483200,1558569600,1558656000,1558828800,1558915200,1559001600,1559088000,1559174400,1559260800,1559520000,1559606400,1559692800,1559779200,1559865600,1560124800,1560211200,1560297600,1560384000,1560470400,1560729600,1560816000,1560902400,1560988800,1561075200,1561334400,1561420800,1561507200,1561593600,1561680000,1561939200,1562025600,1562112000,1562198400,1562284800,1562544000,1562630400,1562716800,1562803200,1562889600,1563148800,1563235200,1563321600,1563408000,1563494400,1563753600,1563840000,1563926400,1564012800,1564099200,1564358400,1564444800,1564531200,1564617600,1564704000,1564963200,1565049600,1565136000,1565222400,1565308800,1565568000,1565654400,1565740800,1565827200,1565913600,1566172800,1566259200,1566345600,1566432000,1566518400,1566777600,1566864000,1566950400,1567036800,1567123200,1567296000,1567382400,1567468800,1567555200,1567641600,1567728000,1567987200,1568073600,1568160000,1568246400,1568332800,1568592000,1568678400,1568764800,1568851200,1568937600,1569196800,1569283200,1569369600,1569456000,1569542400,1569801600,1569888000,1569974400,1570060800,1570147200,1570406400,1570492800,1570579200,1570665600,1570752000,1571011200,1571097600,1571184000,1571270400,1571356800,1571616000,1571702400,1571788800,1571875200,1571961600};
		double opens[]  = {1284.7,1319.9,1318.7,1328,1317.6,1321.6,1314.3,1325,1319.3,1323.1,1324.7,1321.3,1323.5,1322,1281.3,1281.95,1311.1,1315,1314,1313.1,1331.9,1334.2,1341.3,1350.6,1349.8,1346.4,1343.4,1344.9,1335.6,1337.9,1342.5,1337,1338.6,1337,1340.4,1324.65,1324.35,1349.5,1371.3,1367.9,1351.3,1357.8,1356.1,1356,1347.6,1339.1,1320.6,1311.8,1314,1312.4,1312.3,1323.5,1319.1,1327.2,1332.1,1320.3,1323.1,1328,1330.9,1338,1333,1335.3,1345.2,1341.1,1332.5,1314,1314.4,1310.7,1314,1313.1,1315,1313.7,1320,1326.5,1329.2,1314.2,1312.3,1309.5,1297.4,1293.7,1277.9,1295.8,1295.2,1290.3,1294.2,1298,1306.4,1299.8,1302.3,1297,1289.6,1302,1300.7,1303.5,1300.5,1303.2,1306,1318.7,1315,1314.5,1304.1,1294.7,1293.7,1291.2,1290.2,1300.4,1284.2,1284.25,1301.8,1295.9,1296.2,1304.4,1323.1,1340.9,1341,1348,1351.4,1351.4,1343.5,1342.3,1349,1357.6,1357.1,1354.7,1361.4,1375.2,1403.5,1414.7,1433.2,1438,1423.6,1424.4,1418,1399.5,1435.5,1421.25,1434.1,1412.4,1409.8,1412.2,1433.4,1418.4,1429,1428.8,1420.6,1441,1460.4,1441.7,1438.4,1431,1439.3,1427.4,1431.9,1439.5,1443.7,1425.6,1457.5,1451.2,1481.1,1486.7,1512.1,1515.9,1509.2,1522.3,1513,1526.6,1533.9,1523,1506.3,1518.4,1512.4,1508.8,1545.4,1537.3,1551.8,1549.4,1536.9,1535.25,1537.95,1535.2,1556,1561.4,1525.6,1516.4,1507,1493.9,1504.9,1506.5,1513.1,1506.5,1509.7,1502,1506.8,1521.5,1529.8,1539.8,1510.9,1511.8,1501.7,1478,1485.4,1505.6,1511.6,1518.6,1498.7,1510.9,1510.8,1498.3,1492,1497.7,1484.8,1494.2,1495.6,1495.6,1487.5,1491.1,1495.1,1506.4};
		double highs[]  = {1284.75,1320.6,1327,1330.8,1326.8,1321.6,1326,1328,1325.8,1327.1,1326,1326,1323.5,1322.1,1282.7,1282.95,1315.8,1316.3,1314,1333.2,1334.7,1341.7,1353.2,1354.6,1352.2,1346.4,1345.7,1344.9,1340.7,1344.2,1342.7,1342.1,1345.2,1342,1350,1324.95,1330.75,1369.6,1374.3,1368.4,1359.8,1359,1357,1356,1353.4,1340.6,1322.3,1314.1,1316.1,1312.9,1325.7,1323.5,1326.3,1336,1332.1,1330.1,1330.4,1334.7,1341.1,1344.2,1338.8,1348.4,1345.6,1342.8,1334.7,1322.3,1319.3,1314.7,1316.6,1316.4,1315,1325.4,1328.3,1332.2,1329.2,1316.9,1312.3,1309.5,1299.6,1296.9,1277.9,1299.5,1296.2,1298.4,1302.5,1308.7,1306.4,1305.9,1307,1297.2,1301.7,1305,1305.3,1310.2,1307,1308,1319.8,1321.7,1318.7,1316.2,1305.9,1295.8,1293.8,1293.7,1304.2,1302,1285.15,1286.85,1304,1302,1305.2,1323,1344.1,1345.2,1360.1,1355.3,1363.8,1353,1344.7,1353.6,1358,1373.6,1358.2,1369.6,1377.6,1408.9,1425.5,1435.9,1453.7,1438,1426,1439.1,1418,1435,1452.6,1426.65,1437.5,1421.5,1414.1,1433.3,1441.3,1431.4,1433.9,1432.4,1440.8,1462.3,1467,1443.5,1444,1442.9,1447,1437.6,1440.8,1445.7,1447.8,1458.2,1461.9,1481.8,1486.8,1522.7,1521.3,1521.1,1531.5,1546.1,1534.9,1537.7,1538.6,1523.6,1518.8,1518.4,1514.6,1540.3,1565,1554.5,1556.6,1559.8,1541.9,1542.9,1540.05,1558.9,1566.2,1561.9,1536.2,1523.8,1509.1,1506.2,1532.2,1516.6,1519.7,1515,1519.5,1512.1,1524.5,1534.4,1543.3,1543.3,1542.8,1519.5,1507.2,1493.5,1511.4,1525.8,1522.2,1518.8,1515.3,1518,1522.3,1508,1501.5,1503,1495.5,1501.1,1497.9,1498.7,1492.1,1499.4,1506.9,1520.9};
		double lows[]   = {1282.85,1315,1318.7,1309.6,1317.6,1312.9,1312.4,1319.1,1319,1321,1318.1,1321.3,1319.9,1312,1280.5,1276.15,1308,1309.9,1308.5,1312.3,1329.3,1333.1,1340.2,1347,1345.9,1338,1340.8,1335,1332,1337.9,1333,1336.8,1333.2,1329.9,1340.4,1323.85,1324.05,1349,1366.3,1351.2,1349.1,1352.4,1350.7,1344.3,1338.9,1316.3,1308.4,1306.9,1309.6,1306.7,1312.3,1315.4,1319,1327.2,1317.2,1320,1323,1328,1323,1327.8,1331.7,1335.3,1336.6,1331.8,1311.4,1310,1309.5,1308,1310.6,1302.8,1306.6,1313.7,1320,1322.8,1311,1312.1,1303.6,1293.9,1293.5,1291,1277.9,1294.1,1286,1289.1,1293.5,1296.9,1298,1299.6,1292.9,1285.1,1288.5,1296.3,1297.2,1298.4,1298.6,1302,1300.3,1312,1310.8,1301.9,1292,1291.1,1286.3,1289.2,1289.9,1297.4,1283.65,1283.25,1292.9,1295.9,1290.8,1304.2,1322.7,1336.1,1341,1343.5,1345.8,1340.3,1335.1,1341.5,1347.6,1352.8,1348.2,1353.7,1356.5,1373.3,1398,1414.7,1427,1416.4,1412.7,1420.1,1396.4,1398.8,1426.6,1412.85,1400.7,1406,1399.8,1404.4,1415.5,1417.2,1421.9,1415,1413.7,1428.1,1434,1435.7,1427.5,1429.4,1423.9,1425.6,1427.5,1434.8,1422.3,1412.1,1442.5,1448.8,1468.2,1484.3,1501.6,1506.2,1498.6,1488.9,1504.5,1518.3,1513.9,1503.3,1503,1506.5,1502.1,1503,1534.8,1535.3,1541.4,1528.6,1525.6,1535.25,1528.15,1528,1542.6,1514.3,1510.7,1505.5,1492.1,1492.9,1496.8,1493.1,1503.4,1500.9,1490.7,1496.3,1505.3,1505.3,1517.9,1507.4,1507.1,1493.3,1470.5,1465,1480.5,1501.7,1501.4,1493.3,1492.1,1505.1,1495.7,1478,1487.1,1480.8,1480.6,1487,1488.3,1484.8,1484,1490.7,1490.4,1503.1};
		double closes[] = {1283.35,1315.3,1326.1,1317.4,1321.5,1317.4,1323.5,1319.2,1321.3,1323.3,1319.7,1325.1,1323.6,1313.8,1282.05,1279.05,1314.2,1315.2,1310.8,1329.1,1334.5,1340.2,1340.5,1350,1347.1,1344.3,1344.6,1339.7,1339.4,1343.7,1337,1338.9,1340.1,1338.7,1346.8,1324.25,1329.55,1369.6,1372.5,1352.4,1357.6,1354.2,1353.4,1346,1341,1323.8,1311.9,1309.1,1312.2,1310.7,1324.3,1315.7,1322.4,1333.8,1319.4,1327.1,1325.8,1330.9,1325.8,1331.6,1336.5,1346.7,1339.2,1334.7,1313.3,1316.5,1312.4,1313.4,1313.3,1312.2,1313.7,1319.9,1326.3,1331.9,1311.3,1313.4,1309.4,1295.2,1294.7,1294.1,1277.9,1295.8,1291.2,1297.4,1297.7,1306.8,1299.4,1303.6,1302.2,1289.9,1299.2,1301.8,1303.6,1299.5,1303.2,1305.3,1319.5,1313.6,1315.1,1303.5,1293,1294.6,1290.4,1291.4,1302.7,1301,1284.15,1284.95,1294.3,1297.9,1304.1,1322.6,1339.3,1340.1,1344.9,1354,1357.4,1340.7,1342.7,1348.2,1355.1,1355.9,1354.2,1362.1,1360.1,1408.3,1411.2,1429.5,1430.1,1426.8,1423.4,1425.1,1400.8,1419.8,1432.9,1423.55,1412.1,1412.2,1412.8,1424.9,1419.3,1424.8,1426.1,1423.6,1435.9,1440.8,1439.4,1439.7,1434.5,1436.5,1427.5,1432.2,1433.3,1441.8,1437.8,1432.4,1457.5,1476.5,1484.2,1519.6,1509.5,1508.5,1517.2,1514.1,1527.8,1531.2,1523.6,1511.6,1515.7,1515.7,1508.5,1537.6,1537.2,1551.8,1549.1,1536.9,1529.4,1538.05,1535.15,1555.9,1560.4,1525.5,1515.5,1511.1,1499.2,1503.2,1507.4,1499.5,1511.5,1513.4,1515.8,1506.2,1515.1,1531.5,1540.2,1512.3,1515.2,1506.4,1472.9,1489,1507.9,1513.8,1512.9,1504.4,1503.9,1512.8,1500.9,1488.7,1497.6,1483.5,1494,1498.3,1494.1,1488.1,1487.5,1495.7,1504.7,1505.3};
        static bool tooltip = true;
        ImGui::Checkbox("Show Tooltip", &tooltip);
        ImGui::SameLine();
        static ImVec4 bullCol = ImVec4(0.000f, 1.000f, 0.441f, 1.000f);
        static ImVec4 bearCol = ImVec4(0.853f, 0.050f, 0.310f, 1.000f);
        ImGui::SameLine(); ImGui::ColorEdit4("##Bull", &bullCol.x, ImGuiColorEditFlags_NoInputs);
        ImGui::SameLine(); ImGui::ColorEdit4("##Bear", &bearCol.x, ImGuiColorEditFlags_NoInputs);
        ImPlot::GetStyle().UseLocalTime = false;
        ImPlot::SetNextPlotFormatY("$%.0f");
        ImPlot::SetNextPlotLimits(1546300800, 1571961600, 1250, 1600);
        if (ImPlot::BeginPlot("Candlestick Chart",NULL,NULL,ImVec2(-1,0),0,ImPlotAxisFlags_Time,ImPlotAxisFlags_AutoFit|ImPlotAxisFlags_RangeFit)) {
            MyImPlot::PlotCandlestick("GOOGL",dates, opens, closes, lows, highs, 218, tooltip, 0.25f, bullCol, bearCol);
            ImPlot::EndPlot();
        }
    }
    //-------------------------------------------------------------------------
    ImGui::End();
}

} // namespace ImPlot

namespace MyImPlot {

ImPlotPoint SineWave(void* data , int idx) {
    WaveData* wd = (WaveData*)data;
    double x = idx * wd->X;
    return ImPlotPoint(x, wd->Offset + wd->Amp * sin(2 * 3.14 * wd->Freq * x));
}

ImPlotPoint SawWave(void* data, int idx) {
    WaveData* wd = (WaveData*)data;
    double x = idx * wd->X;
    return ImPlotPoint(x, wd->Offset + wd->Amp * (-2 / 3.14 * atan(cos(3.14 * wd->Freq * x) / sin(3.14 * wd->Freq * x))));
}

ImPlotPoint Spiral(void*, int idx) {
    float r = 0.9f;            // outer radius
    float a = 0;               // inner radius
    float b = 0.05f;           // increment per rev
    float n = (r - a) / b;     // number  of revolutions
    double th = 2 * n * 3.14;  // angle
    float Th = float(th * idx / (1000 - 1));
    return ImPlotPoint(0.5f+(a + b*Th / (2.0f * (float) 3.14))*cos(Th),
                       0.5f + (a + b*Th / (2.0f * (float)3.14))*sin(Th));
}

// Example for Tables section. Generates a quick and simple shaded line plot. See implementation at bottom.
void Sparkline(const char* id, const float* values, int count, float min_v, float max_v, int offset, const ImVec4& col, const ImVec2& size) {
    ImPlot::PushStyleVar(ImPlotStyleVar_PlotPadding, ImVec2(0,0));
    ImPlot::SetNextPlotLimits(0, count - 1, min_v, max_v, ImGuiCond_Always);
    if (ImPlot::BeginPlot(id,0,0,size,ImPlotFlags_CanvasOnly|ImPlotFlags_NoChild,ImPlotAxisFlags_NoDecorations,ImPlotAxisFlags_NoDecorations)) {
        ImPlot::PushStyleColor(ImPlotCol_Line, col);
        ImPlot::PlotLine(id, values, count, 1, 0, offset);
        ImPlot::PushStyleVar(ImPlotStyleVar_FillAlpha, 0.25f);
        ImPlot::PlotShaded(id, values, count, 0, 1, 0, offset);
        ImPlot::PopStyleVar();
        ImPlot::PopStyleColor();
        ImPlot::EndPlot();
    }
    ImPlot::PopStyleVar();
}

void StyleSeaborn() {

    ImPlotStyle& style              = ImPlot::GetStyle();

    ImVec4* colors                  = style.Colors;
    colors[ImPlotCol_Line]          = IMPLOT_AUTO_COL;
    colors[ImPlotCol_Fill]          = IMPLOT_AUTO_COL;
    colors[ImPlotCol_MarkerOutline] = IMPLOT_AUTO_COL;
    colors[ImPlotCol_MarkerFill]    = IMPLOT_AUTO_COL;
    colors[ImPlotCol_ErrorBar]      = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
    colors[ImPlotCol_FrameBg]       = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
    colors[ImPlotCol_PlotBg]        = ImVec4(0.92f, 0.92f, 0.95f, 1.00f);
    colors[ImPlotCol_PlotBorder]    = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
    colors[ImPlotCol_LegendBg]      = ImVec4(0.92f, 0.92f, 0.95f, 1.00f);
    colors[ImPlotCol_LegendBorder]  = ImVec4(0.80f, 0.81f, 0.85f, 1.00f);
    colors[ImPlotCol_LegendText]    = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
    colors[ImPlotCol_TitleText]     = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
    colors[ImPlotCol_InlayText]     = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
    colors[ImPlotCol_XAxis]         = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
    colors[ImPlotCol_XAxisGrid]     = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
    colors[ImPlotCol_YAxis]         = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
    colors[ImPlotCol_YAxisGrid]     = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
    colors[ImPlotCol_YAxis2]        = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
    colors[ImPlotCol_YAxisGrid2]    = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
    colors[ImPlotCol_YAxis3]        = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
    colors[ImPlotCol_YAxisGrid3]    = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
    colors[ImPlotCol_Selection]     = ImVec4(1.00f, 0.65f, 0.00f, 1.00f);
    colors[ImPlotCol_Query]         = ImVec4(0.23f, 0.10f, 0.64f, 1.00f);
    colors[ImPlotCol_Crosshairs]    = ImVec4(0.23f, 0.10f, 0.64f, 0.50f);

    style.LineWeight       = 1.5;
    style.Marker           = ImPlotMarker_None;
    style.MarkerSize       = 4;
    style.MarkerWeight     = 1;
    style.FillAlpha        = 1.0f;
    style.ErrorBarSize     = 5;
    style.ErrorBarWeight   = 1.5f;
    style.DigitalBitHeight = 8;
    style.DigitalBitGap    = 4;
    style.PlotBorderSize   = 0;
    style.MinorAlpha       = 1.0f;
    style.MajorTickLen     = ImVec2(0,0);
    style.MinorTickLen     = ImVec2(0,0);
    style.MajorTickSize    = ImVec2(0,0);
    style.MinorTickSize    = ImVec2(0,0);
    style.MajorGridSize    = ImVec2(1.2f,1.2f);
    style.MinorGridSize    = ImVec2(1.2f,1.2f);
    style.PlotPadding      = ImVec2(12,12);
    style.LabelPadding     = ImVec2(5,5);
    style.LegendPadding    = ImVec2(5,5);
    style.MousePosPadding      = ImVec2(5,5);
    style.PlotMinSize      = ImVec2(300,225);
}

} // namespaece MyImPlot

// WARNING:
//
// You can use "implot_internal.h" to build custom plotting fuctions or extend ImPlot.
// However, note that forward compatibility of this file is not guaranteed and the
// internal API is subject to change. At some point we hope to bring more of this
// into the public API and expose the necessary building blocks to fully support
// custom plotters. For now, proceed at your own risk!

#include "implot_internal.h"

namespace MyImPlot {

template <typename T>
int BinarySearch(const T* arr, int l, int r, T x) {
    if (r >= l) {
        int mid = l + (r - l) / 2;
        if (arr[mid] == x)
            return mid;
        if (arr[mid] > x)
            return BinarySearch(arr, l, mid - 1, x);
        return BinarySearch(arr, mid + 1, r, x);
    }
    return -1;
}

void PlotCandlestick(const char* label_id, const double* xs, const double* opens, const double* closes, const double* lows, const double* highs, int count, bool tooltip, float width_percent, ImVec4 bullCol, ImVec4 bearCol) {

    // get ImGui window DrawList
    ImDrawList* draw_list = ImPlot::GetPlotDrawList();
    // calc real value width
    double half_width = count > 1 ? (xs[1] - xs[0]) * width_percent : width_percent;

    // custom tool
    if (ImPlot::IsPlotHovered() && tooltip) {
        ImPlotPoint mouse   = ImPlot::GetPlotMousePos();
        mouse.x             = ImPlot::RoundTime(ImPlotTime::FromDouble(mouse.x), ImPlotTimeUnit_Day).ToDouble();
        float  tool_l       = ImPlot::PlotToPixels(mouse.x - half_width * 1.5, mouse.y).x;
        float  tool_r       = ImPlot::PlotToPixels(mouse.x + half_width * 1.5, mouse.y).x;
        float  tool_t       = ImPlot::GetPlotPos().y;
        float  tool_b       = tool_t + ImPlot::GetPlotSize().y;
        ImPlot::PushPlotClipRect();
        draw_list->AddRectFilled(ImVec2(tool_l, tool_t), ImVec2(tool_r, tool_b), IM_COL32(128,128,128,64));
        ImPlot::PopPlotClipRect();
        // find mouse location index
        int idx = BinarySearch(xs, 0, count - 1, mouse.x);
        // render tool tip (won't be affected by plot clip rect)
        if (idx != -1) {
            ImGui::BeginTooltip();
            char buff[32];
            ImPlot::FormatDate(ImPlotTime::FromDouble(xs[idx]),buff,32,ImPlotDateFmt_DayMoYr,ImPlot::GetStyle().UseISO8601);
            ImGui::Text("Day:   %s",  buff);
            ImGui::Text("Open:  $%.2f", opens[idx]);
            ImGui::Text("Close: $%.2f", closes[idx]);
            ImGui::Text("Low:   $%.2f", lows[idx]);
            ImGui::Text("High:  $%.2f", highs[idx]);
            ImGui::EndTooltip();
        }
    }

    // begin plot item
    if (ImPlot::BeginItem(label_id)) {
        // override legend icon color
        ImPlot::GetCurrentItem()->Color = IM_COL32(64,64,64,255);
        // fit data if requested
        if (ImPlot::FitThisFrame()) {
            for (int i = 0; i < count; ++i) {
                ImPlot::FitPoint(ImPlotPoint(xs[i], lows[i]));
                ImPlot::FitPoint(ImPlotPoint(xs[i], highs[i]));
            }
        }
        // render data
        for (int i = 0; i < count; ++i) {
            ImVec2 open_pos  = ImPlot::PlotToPixels(xs[i] - half_width, opens[i]);
            ImVec2 close_pos = ImPlot::PlotToPixels(xs[i] + half_width, closes[i]);
            ImVec2 low_pos   = ImPlot::PlotToPixels(xs[i], lows[i]);
            ImVec2 high_pos  = ImPlot::PlotToPixels(xs[i], highs[i]);
            ImU32 color      = ImGui::GetColorU32(opens[i] > closes[i] ? bearCol : bullCol);
            draw_list->AddLine(low_pos, high_pos, color);
            draw_list->AddRectFilled(open_pos, close_pos, color);
        }

        // end plot item
        ImPlot::EndItem();
    }
}

} // namespace MyImplot

namespace ImPlot {

//-----------------------------------------------------------------------------
// BENCHMARK
//-----------------------------------------------------------------------------

struct BenchData {
    BenchData() {
        float y = RandomRange(0.0f,1.0f);
        Data = new float[1000];
        for (int i = 0; i < 1000; ++i) {
            Data[i] = y + RandomRange(-0.01f,0.01f);
        }
        Col = ImVec4(RandomRange(0.0f,1.0f),RandomRange(0.0f,1.0f),RandomRange(0.0f,1.0f),0.5f);
    }
    ~BenchData() { delete[] Data; }
    float* Data;
    ImVec4 Col;
};

enum BenchMode {
    Line = 0,
    Shaded = 1,
    Scatter = 2,
    Bars = 3
};

struct BenchRecord {
    int Mode;
    bool AA;
    ImVector<ImPlotPoint> Data;
};

void ShowBenchmarkTool() {
    static const int max_items = 500;
    static BenchData items[max_items];
    static bool running = false;
    static int frames   = 60;
    static int L        = 0;
    static int F        = 0;
    static double t1, t2;
    static int mode     = BenchMode::Line;
    const char* names[] = {"Line","Shaded","Scatter","Bars"};

    static ImVector<BenchRecord> records;

    if (running) {
        F++;
        if (F == frames) {
            t2 = ImGui::GetTime();
            records.back().Data.push_back(ImPlotPoint(L, frames / (t2 - t1)));
            L  += 5;
            F  = 0;
            t1 = ImGui::GetTime();
        }
        if (L > max_items) {
            running = false;
            L = max_items;
        }
    }

    ImGui::Text("ImDrawIdx: %d-bit", (int)(sizeof(ImDrawIdx) * 8));
    ImGui::Text("ImGuiBackendFlags_RendererHasVtxOffset: %s", (ImGui::GetIO().BackendFlags & ImGuiBackendFlags_RendererHasVtxOffset) ? "True" : "False");
    ImGui::Text("%.2f FPS", ImGui::GetIO().Framerate);

    ImGui::Separator();

    bool was_running = running;
    if (was_running) {
        ImGui::PushItemFlag(ImGuiItemFlags_Disabled, true);
        ImGui::PushStyleVar(ImGuiStyleVar_Alpha, ImGui::GetStyle().Alpha * 0.25f);
    }
    if (ImGui::Button("Benchmark")) {
        running = true;
        L = F = 0;
        records.push_back(BenchRecord());
        records.back().Data.reserve(max_items+1);
        records.back().Mode = mode;
        records.back().AA   = ImPlot::GetStyle().AntiAliasedLines;
        t1 = ImGui::GetTime();
    }
    ImGui::SameLine();
    ImGui::SetNextItemWidth(200);
    ImGui::Combo("##Mode",&mode,names,4);
    ImGui::SameLine();

    ImGui::Checkbox("Anti-Aliased Lines", &ImPlot::GetStyle().AntiAliasedLines);
    if (was_running) { ImGui::PopItemFlag(); ImGui::PopStyleVar(); }

    ImGui::ProgressBar((float)L / (float)(max_items - 1));

    ImPlot::SetNextPlotLimits(0,1000,0,1,ImGuiCond_Always);
    if (ImPlot::BeginPlot("##Bench",NULL,NULL,ImVec2(-1,0),ImPlotFlags_NoChild | ImPlotFlags_CanvasOnly,ImPlotAxisFlags_NoDecorations,ImPlotAxisFlags_NoDecorations)) {
        if (running) {
            if (mode == BenchMode::Line) {
                for (int i = 0; i < L; ++i) {
                    ImGui::PushID(i);
                    ImPlot::SetNextLineStyle(items[i].Col);
                    ImPlot::PlotLine("##item", items[i].Data, 1000);
                    ImGui::PopID();
                }
            }
            else if (mode == BenchMode::Shaded) {
                for (int i = 0; i < L; ++i) {
                    ImGui::PushID(i);
                    ImPlot::SetNextFillStyle(items[i].Col,0.5f);
                    ImPlot::PlotShaded("##item", items[i].Data, 1000);
                    ImGui::PopID();
                }
            }
            else if (mode == BenchMode::Scatter) {
                for (int i = 0; i < L; ++i) {
                    ImGui::PushID(i);
                    ImPlot::SetNextLineStyle(items[i].Col);
                    ImPlot::PlotScatter("##item", items[i].Data, 1000);
                    ImGui::PopID();
                }
            }
            else if (mode == BenchMode::Bars) {
                for (int i = 0; i < L; ++i) {
                    ImGui::PushID(i);
                    ImPlot::SetNextFillStyle(items[i].Col,0.5f);
                    ImPlot::PlotBars("##item", items[i].Data, 1000);
                    ImGui::PopID();
                }
            }
        }
        ImPlot::EndPlot();
    }
    ImPlot::SetNextPlotLimits(0,500,0,500,ImGuiCond_Always);
    static char buffer[64];
    if (ImPlot::BeginPlot("##Stats", "Items (1,000 pts each)", "Framerate (Hz)", ImVec2(-1,0), ImPlotFlags_NoChild)) {
        for (int run = 0; run < records.size(); ++run) {
            if (records[run].Data.Size > 1) {
                sprintf(buffer, "B%d-%s%s", run + 1, names[records[run].Mode], records[run].AA ? "-AA" : "");
                ImVector<ImPlotPoint>& d = records[run].Data;
                ImPlot::PlotLine(buffer, &d[0].x, &d[0].y, d.Size, 0, 2*sizeof(double));
            }
        }
        ImPlot::EndPlot();
    }
}

}