A Bar/Line chart using a negative horizontal margin

This is a demo of a combined (grouped) Bar and Line chart where the marginInnerGrouped setting on the Bar chart has been set to -15, This gives the appearance of the bars overlapping each other slightly.

It has dual Y axes by utilising the drawing API Y axis and the colors have been specifically set to what they are in order to link the bars and lines together.

The Lines also have slightly larger than normal tickmarks for a nicer aesthetic and the whole chart uses slightly-larger-than-the-default text.

In terms of responsiveness there's not much done by the Line chart - though there's a lot done by the Bar chart - particularly to accommodate the Y axis objects. To make it easier to understand you will do well to "unminify" it and spread it across multiple lines.

This goes in the documents header:

<script src="RGraph.common.core.js"></script>
<script src="RGraph.bar.js"></script>
<script src="RGraph.line.js"></script>
<script src="RGraph.drawing.yaxis.js"></script>

Put this where you want the chart to show up:

<div style="padding: 15px">
    <canvas id="cvs" width="750" height="500">[No canvas support]</canvas>
</div>

This is the code that generates the chart: