Feature request #20076
Heatmap renderer should feature a holding feature or a way to compute the maximum value over a layer
|Pull Request or Patch supplied:||No||Resolution:|
|Easy fix?:||No||Copied to github as #:||27898|
The heatmap renderer is a very handy tool, but if the MAX value is set to "automatic", that value is recomputed each time the zoom factor changes, leading to inconsistencies in the way the data is displayed (e.g. dark zones, when zoomed in, become bright) – at least when using a PostGIS layer.
Therefore, it would be worth adding a box or something allowing to calibrate the ramp w/r to the layer's maximum instead of taking into account only the displayed area. That would let the user choose between a "global" or a "local" coloring scheme.