I have a shapefile (polygons) for building outlines and I used the field that contains the polyline height to convert the polylines to raster. I have a range of building heights from 1.5m to 199m. The conversion raw data or the raster look alright. I want to export raster to bmp image and, to my understanding, the only available option I have is to use the renderer. I would like to know how to create rendered values from 0-255 that correspond to an elevation range 0-299, regardless of the existing range 1.5-199. Currently, the exported bmp has a value of 255 for the taller building (199m), 0 for the shorter (1.5m) and 0 for the previously empty cells (streets), which is wrong.
Any advise would be much appreciated.