This Scatter chart has been configured to use datetime values for the X coordinates, the title has been customised slightly and the points have tooltips. The background grid has no vertical gridlines.
This goes in the documents header:<script src="RGraph.svg.common.core.js"></script> <script src="RGraph.svg.scatter.js"></script>Put this where you want the chart to show up:
<div style="width: 700px; height: 250px" id="chart-container"></div>This is the code that generates the chart: