[Qgis-developer] Heatmap renderer: caching possible?

[Andreas Neumann]

Hi,

I tried the new heatmap renderer in QGIS master. It works nicely.

I wonder if we could introduce a caching mechanism in a temporary raster 
layer to speed up zooming and panning? The idea would be to recreate the 
heatmap every time the project is loaded and then cache it while the 
project is open. At least as an option. For small data or smaller search 
radius the live behaviour would still work well, but for larger data 
sets of larger search radius, such a cache raster would speed things up 
significantly, especially in a server scenario.

Would such a cache be technically possible and useful?

Andreas