A Bar chart with an added watermark

By using the Image drawing object you can easily add a watermark to your charts. With the image drawing object it means that you can even add mouseover or click events to it, or even a tooltip.

This goes in the documents header:

<script src="RGraph.common.core.js"></script>
<script src="RGraph.common.dynamic.js"></script>
<script src="RGraph.common.tooltips.js"></script>
<script src="RGraph.drawing.image.js"></script>
<script src="RGraph.bar.js"></script>

Put this where you want the chart to show up:

<canvas id="cvs" width="600" height="500">
    [No canvas support]
</canvas>

This is the code that generates the chart: