I need to display discrete X, Y data as a MAP in a color-coded PNG or GIF file to indicate discrete values.
All the Javascript Chart libraries I've seen deal with pie charts, line graphs, bar charts, etc., but are not scatter charts.
Does anyone know the name of a library capable of scattering maps?
My current solution is to display the map as an HTML table (and screen capture), where the cells are empty but have colored backgrounds, depending on the discrete value. As expected, this is slow. In particular, when X and Y can take values from 0 to 200 or more.
It also suffers from distortion when browsers choose cell size. Browsers reduce the width of the cells on the page because they realize that their initial choice was too large. Circular cards ultimately look ovoid, and one end is more pointed than the other.
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