From: Neal Nelson <neal@makalumedia.com>
Date: Thu, 17 Jun 2010 14:07:52 +0000 (+0200)
Subject: Ensure step plots draw lines to the start of missing values.
X-Git-Tag: v1.0.0~636^2~7
X-Git-Url: https://adrianiainlam.tk/git/?a=commitdiff_plain;h=0599d13b7ddc7b0820ce6bac78085335ec14522e;p=dygraphs.git

Ensure step plots draw lines to the start of missing values.
---

diff --git a/dygraph-canvas.js b/dygraph-canvas.js
index 2eb5ce1..3988b19 100644
--- a/dygraph-canvas.js
+++ b/dygraph-canvas.js
@@ -616,6 +616,15 @@ DygraphCanvasRenderer.prototype._renderLineChart = function() {
       var point = points[j];
       if (point.name == setName) {
         if (!isOK(point.canvasy)) {
+          if (stepPlot) {
+            // Draw a horizontal line to the start of the missing data
+            ctx.beginPath();
+            ctx.strokeStyle = color;
+            ctx.lineWidth = this.options.strokeWidth;
+            ctx.moveTo(prevX, prevY);
+            ctx.lineTo(point.canvasx, prevY);
+            ctx.stroke();
+          }
           // this will make us move to the next point, not draw a line to it.
           prevX = prevY = null;
         } else {