A Waterfall chart that's being created using the Google Sheets connector. In this case only positive values are being displayed.
This goes in the documents header:<script src="RGraph.svg.common.core.js"></script> <script src="RGraph.svg.common.sheets.js"></script> <script src="RGraph.svg.waterfall.js"></script>Put this where you want the chart to show up:
<div style="width: 1000px; height: 300px" id="chart-container"></div>This is the code that generates the chart: