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Would you share your Mapbox process; starting with the import of the tif file to generating the output for loading? I have created the georeferenced image with QGIS and need some help with the next steps.
I can't speak for doing it in Qlik GeoAnalytics but I can say that it's rather easy in QlikMaps.
In this image I simply loaded a .png file in as the base map and used heat readings at various points around the board. I then scaled the points to match the image on the board and got the image you see below.