Checklist for more heatmap features

What can we do to make ScottPlot better?

• Allow user-set intensity scale
• Transparent heatmaps w/ background image
  • Scaling options? Are these necessary?
  • Nullables in intensities map to transparent? I don’t like this idea
  • Map intensities below threshold to transparent
  • It will be valuable to support transparent image above heatmap as well as transparent heatmap above image
    • For example geographic heatmaps
• Better axes
• More colourmaps
  • cmocean
  • plotly doesn’t look promising
  • custom
• ScottPlot.Tools.XYToIntensities()
  • Gaussian and density-based
• Strange rounding? #482
• Heatmap temperature bar not displaying correctly #492 Not relevant to current Colorbar

[bclehmann]

I’m working on this in https://github.com/Benny121221/ScottPlot/tree/heatmap-improvements but I’m not going to open a PR just yet

[swharden]

There hasn’t been movement here in a few months so I’ll close this issue. The current status of heatmaps is they are partially supported, Plot.PlotHeatmap() is pubic but marked obsolete. Some heatmap-related interactive logic snaked its way into the user control code, but that will likely get refactored-out if the control logic is isolated in its own module (#496) so I’ll keep things simple and leave all the current functionality the same. This issue can be re-opened if work/progress on this front resumes