This uses the relatively recent addition to canvas from the canvas v5 specification - native dotted and dashed lines. In somewhat limited testing it worked in Chrome, Firefox and Internet Explorer 11.
obj.Set('background.grid.dashed', true);
obj.Set('background.grid.dotted', true);
Or using JSON style configuration:
...
backgroundGridDashed: true,
backgroundGridDotted: true,
...
This goes in the documents header:
<script src="RGraph.common.core.js"></script> <script src="RGraph.gantt.js"></script>Put this where you want the chart to show up:
<canvas id="cvs1" width="600" height="250">[No canvas support]</canvas> <canvas id="cvs2" width="600" height="250">[No canvas support]</canvas>This is the code that generates the chart:
<script>
window.onload = function ()
{
var gantt = new RGraph.Gantt({
id: 'cvs1',
data: [
[0,5,50,'Richard'],
[3,2,25,'John'],
[3,2,10,'Freed']
],
options: {
labels: ['Monday','Tuesday','Wednesday','Thursday','Friday'],
xmax: 5,
title: 'A dashed background grid',
titleY: 25,
backgroundGridDashed: true,
gutterRight: 45
}
}).draw();
var bargantt2 = new RGraph.Gantt({
id: 'cvs2',
data: [
[0,5,50,'Richard'],
[3,2,25,'John'],
[3,2,10,'Freed']
],
options: {
labels: ['Mal', 'Barry', 'Gary', 'Neil', 'Kim', 'Pete', 'Lou', 'Fred', 'Jobe'],
xmax: 5,
title: 'A dotted background grid',
titleY: 25,
backgroundGridDotted: true,
gutterRight: 45
}
}).draw();
};
</script>