# A Bar chart with a trendline

In this chart the `trendline` is provided by the Line chart - which uses the same data as the Bar chart, but its color is set to `transparent` so you can't see it. The Bar chart can also draw a `trendline` by itself.

This goes in the documents header:

    <script src="RGraph.common.core.js"></script>
    <script src="RGraph.common.dnamic.js"></script>
    <script src="RGraph.common.tooltips.js"></script>
    <script src="RGraph.bar.js"></script>

Put this where you want the chart to show up:

    <div>
        <canvas id="cvs" width="750" height="250">[No canvas support]</canvas>
    </div>

This is the code that generates the chart - it should be placed AFTER the `canvas` tag(s):