# A demo of the dotted or dashed background grid (limited browser support)

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>