Scatter Charts

Graphael Business Quadrant Charts

Next step was to produce a (more) polished product. We started to feed real data into our prototype code and quickly spotted some obvious visual issues:

Graphael Prototype Business Quadrant Chart

We needed to produce a Business Quadrant chart and had decided to use the graphael graphing engine to do it.

The first step was to create a skeleton module based upon Drupal Charts design that would allow us to specify and supply the chart data via a View. The initial version only provided the (x,y) data points by selecting a series of nodes.

Open Source Graphing Engines

We came to the conclusion that we needed to roll our own Business Quadrant Charts and started the search for a suitable open source graphing engine that we could easily incorporate into Drupal.

We separated the problem into two distinct architectural areas:

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