Merge pull request #301 from BoivinBenoit/master

[dygraphs.git] / dygraph-canvas.js

diff --git a/dygraph-canvas.js b/dygraph-canvas.js
index 6bf5fbc..5bfbfbf 100644 (file)
--- a/dygraph-canvas.js
+++ b/dygraph-canvas.js
@@ -716,7 +716,7 @@ DygraphCanvasRenderer._fillPlotter = function(e) {
     var last_x, is_first = true;
     while (iter.hasNext) {
       var point = iter.next();
-      if (!Dygraph.isOK(point.y)) {
+      if (!Dygraph.isOK(point.y) && !stepPlot) {
         prevX = NaN;
         if (point.y_stacked !== null && !isNaN(point.y_stacked)) {
           baseline[point.canvasx] = area.h * point.y_stacked + area.y;
@@ -757,7 +757,11 @@ DygraphCanvasRenderer._fillPlotter = function(e) {
         }
 
       } else {
-        newYs = [ point.canvasy, axisY ];
+        if (isNaN(point.canvasy) && stepPlot) {
+          newYs = [ area.y + area.h, axisY ];
+        } else {
+          newYs = [ point.canvasy, axisY ];
+        }
       }
       if (!isNaN(prevX)) {
         ctx.moveTo(prevX, prevYs[0]);