- if (point.name == setName) {
- if (isNullOrNaN(point.canvasy)) {
- if (stepPlot && prevX != null) {
- // Draw a horizontal line to the start of the missing data
+ if (isNullOrNaN(point.canvasy)) {
+ if (stepPlot && prevX != null) {
+ // Draw a horizontal line to the start of the missing data
+ ctx.beginPath();
+ ctx.strokeStyle = color;
+ ctx.lineWidth = this.attr_('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 {
+ // A point is "isolated" if it is non-null but both the previous
+ // and next points are null.
+ var isIsolated = (!prevX && (j == points.length - 1 ||
+ isNullOrNaN(points[j+1].canvasy)));
+ if (prevX === null) {
+ prevX = point.canvasx;
+ prevY = point.canvasy;
+ } else {
+ // TODO(antrob): skip over points that lie on a line that is already
+ // going to be drawn. There is no need to have more than 2
+ // consecutive points that are collinear.
+ if (strokeWidth) {