Merge pull request #17 from aaronhayes/master

Dynamically Add/Remove Data Points

Author: jhudson8

.gitignore

@@ -30,3 +30,5 @@ node_modules
 .DS_Store
 showcase
 .generator-release
+
+.idea/*

lib/core.js

@@ -42,6 +42,8 @@ module.exports = {
       } else {
         dataKey = dataKey || dataKeys[chart.name];
         updatePoints(nextProps, chart, dataKey);
+        chart.scale.xLabels = nextProps.data.labels;
+        chart.scale.calculateXLabelRotation();
         chart.update();
       }
     };
@@ -91,14 +93,26 @@ var updatePoints = function(nextProps, chart, dataKey) {
       chart.segments[segmentIndex].value = segment.value;
     });
   } else {
+    while (chart.scale.xLabels.length > nextProps.data.labels.length) {
+      chart.removeData();
+    }
     nextProps.data.datasets.forEach(function(set, setIndex) {
       set.data.forEach(function(val, pointIndex) {
-        chart.datasets[setIndex][dataKey][pointIndex].value = val;
+        if (typeof(chart.datasets[setIndex][dataKey][pointIndex]) == "undefined") {
+          addData(nextProps, chart, setIndex, pointIndex);
+        } else {
+          chart.datasets[setIndex][dataKey][pointIndex].value = val;
+        }
       });
     });
   }
 };
 
-
-
+var addData = function(nextProps, chart, setIndex, pointIndex) {
+  var values = [];
+  nextProps.data.datasets.forEach(function(set) {
+    values.push(set.data[pointIndex]);
+  });
+  chart.addData(values, nextProps.data.labels[setIndex]);
+};