Merge pull request #7 from matplotlib/develop

Working with latest matplotlib, scale_lines also now scales markers.

Author: isaacrobinson2000

.github/workflows/pytest.yml

@@ -19,7 +19,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.11", "3.12", "3.13", "3.13t"]
 
     steps:
       - uses: actions/checkout@v4
@@ -57,15 +57,24 @@ jobs:
           flake8 matplotview --count --select=E9,F63,F7,F82 --show-source --statistics
           flake8 matplotview --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
       - name: Test with pytest
+        id: pytest
         run: |
           pytest
 
+      - name: Upload images on failure
+        uses: actions/upload-artifact@v4
+        if: ${{ failure() && steps.pytest.conclusion == 'failure' }}
+        with:
+          name: test-result-images
+          retention-days: 1
+          path: result_images/
+
   test-windows:
 
     runs-on: windows-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.11", "3.12", "3.13", "3.13t"]
 
     steps:
       - uses: actions/checkout@v4
@@ -82,5 +91,14 @@ jobs:
           pip install pytest
           pip install -r requirements.txt
       - name: Test with pytest
+        id: pytest
         run: |
-          pytest
+          pytest
+
+      - name: Upload images on failure
+        uses: actions/upload-artifact@v4
+        if: ${{ failure() && steps.pytest.conclusion == 'failure' }}
+        with:
+          name: test-result-images
+          retention-days: 1
+          path: result_images/

matplotview/_transform_renderer.py

@@ -251,6 +251,76 @@ def _draw_text_as_path(
         # checked above... (Above case causes error)
         super()._draw_text_as_path(gc, x, y, s, prop, angle, ismath)
 
+    def draw_markers(
+        self,
+        gc,
+        marker_path,
+        marker_trans,
+        path,
+        trans,
+        rgbFace=None,
+    ):
+        # If the markers need to be scaled accurately (such as in log scale), just use the fallback as each will need
+        # to be scaled separately.
+        if (self.__scale_widths):
+            super().draw_markers(gc, marker_path, marker_trans, path, trans, rgbFace)
+            return
+
+        # Otherwise we transform just the marker offsets (not the marker patch), so they stay the same size.
+        path = path.deepcopy()
+        path.vertices = self._get_transfer_transform(trans).transform(path.vertices)
+        bbox = self._get_axes_display_box()
+
+        # Change the clip to the sub-axes box
+        gc.set_clip_rectangle(bbox)
+        if (not isinstance(self.__bounding_axes.patch, Rectangle)):
+            gc.set_clip_path(TransformedPatchPath(self.__bounding_axes.patch))
+
+        rgbFace = tuple(rgbFace) if (rgbFace is not None) else None
+        self.__renderer.draw_markers(gc, marker_path, marker_trans, path, IdentityTransform(), rgbFace)
+
+    def draw_path_collection(
+        self,
+        gc,
+        master_transform,
+        paths,
+        all_transforms,
+        offsets,
+        offset_trans,
+        facecolors,
+        edgecolors,
+        linewidths,
+        linestyles,
+        antialiaseds,
+        urls,
+        offset_position,
+    ):
+        # If we want accurate scaling for each marker (such as in log scale), just use superclass implementation...
+        if (self.__scale_widths):
+            super().draw_path_collection(
+                gc, master_transform, paths, all_transforms, offsets, offset_trans, facecolors,
+                edgecolors, linewidths, linestyles, antialiaseds, urls, offset_position
+            )
+            return
+
+        # Otherwise we transform just the offsets, and pass them to the backend.
+        print(offsets)
+        if (np.any(np.isnan(offsets))):
+            raise ValueError("???")
+        offsets = self._get_transfer_transform(offset_trans).transform(offsets)
+        print(offsets)
+        bbox = self._get_axes_display_box()
+
+        # Change the clip to the sub-axes box
+        gc.set_clip_rectangle(bbox)
+        if (not isinstance(self.__bounding_axes.patch, Rectangle)):
+            gc.set_clip_path(TransformedPatchPath(self.__bounding_axes.patch))
+
+        self.__renderer.draw_path_collection(
+            gc, master_transform, paths, all_transforms, offsets, IdentityTransform(), facecolors,
+            edgecolors, linewidths, linestyles, antialiaseds, urls, None
+        )
+
     def draw_gouraud_triangle(
         self,
         gc: GraphicsContextBase,

matplotview/tests/test_view_rendering.py

@@ -1,3 +1,5 @@
+import sys
+
 import numpy as np
 import matplotlib.pyplot as plt
 from matplotlib.testing.decorators import check_figures_equal
@@ -240,3 +242,77 @@ def test_stop_viewing(fig_test, fig_ref):
 
     ax1_ref.plot(data)
     ax1_ref.text(0.5, 0.5, "Hello")
+
+
+# On MacOS the results are off by an extremely tiny amount, can't even see in diff. It's close enough...
+@check_figures_equal(tol=0.02 if sys.platform.startswith("darwin") else 0)
+def test_log_line(fig_test, fig_ref):
+    data = [i for i in range(1, 10)]
+
+    # Test case... Create a view and stop it...
+    ax1_test, ax2_test = fig_test.subplots(1, 2)
+
+    ax1_test.set(xscale="log", yscale="log")
+    ax1_test.plot(data, "-o")
+
+    view(ax2_test, ax1_test, scale_lines=False)
+    ax2_test.set_xlim(-1, 10)
+    ax2_test.set_ylim(-1, 10)
+
+    # Reference, just don't plot anything at all in the second axes...
+    ax1_ref, ax2_ref = fig_ref.subplots(1, 2)
+
+    ax1_ref.set(xscale="log", yscale="log")
+    ax1_ref.plot(data, "-o")
+    ax2_ref.plot(data, "-o")
+    ax2_ref.set_xlim(-1, 10)
+    ax2_ref.set_ylim(-1, 10)
+
+
+@check_figures_equal()
+def test_log_scatter(fig_test, fig_ref):
+    data = [i for i in range(1, 11)]
+
+    # Test case... Create a view and stop it...
+    ax1_test, ax2_test = fig_test.subplots(1, 2)
+
+    ax1_test.set(xscale="log", yscale="log")
+    ax1_test.scatter(data, data)
+
+    view(ax2_test, ax1_test, scale_lines=False)
+    ax2_test.set_xlim(-5, 15)
+    ax2_test.set_ylim(-5, 15)
+
+    # Reference, just don't plot anything at all in the second axes...
+    ax1_ref, ax2_ref = fig_ref.subplots(1, 2)
+
+    ax1_ref.set(xscale="log", yscale="log")
+    ax1_ref.scatter(data, data)
+    ax2_ref.scatter(data, data)
+    ax2_ref.set_xlim(-5, 15)
+    ax2_ref.set_ylim(-5, 15)
+
+
+@check_figures_equal()
+def test_log_scatter_with_colors(fig_test, fig_ref):
+    data = [i for i in range(1, 11)]
+    colors = list("rgbrgbrgbr")
+
+    # Test case... Create a view and stop it...
+    ax1_test, ax2_test = fig_test.subplots(1, 2)
+
+    ax1_test.set(xscale="log", yscale="log")
+    ax1_test.scatter(data, data, color=colors)
+
+    view(ax2_test, ax1_test, scale_lines=False)
+    ax2_test.set_xlim(-5, 15)
+    ax2_test.set_ylim(-5, 15)
+
+    # Reference, just don't plot anything at all in the second axes...
+    ax1_ref, ax2_ref = fig_ref.subplots(1, 2)
+
+    ax1_ref.set(xscale="log", yscale="log")
+    ax1_ref.scatter(data, data, color=colors)
+    ax2_ref.scatter(data, data, color=colors)
+    ax2_ref.set_xlim(-5, 15)
+    ax2_ref.set_ylim(-5, 15)