[GRASS-user] Re: How to rescale an aspect map

leonidas leonidas_liakos at yahoo.gr
Mon Feb 13 02:31:27 EST 2012

I need the most suitable areas (with SE aspect) to have the value of 255 and
the unsuitable (North aspect) to have the value of 0. Grass returns N=90 and
SE=315 and flat=0.
So the minimum value of aspect raster is flat areas and the max is areas
with 359 degrees of east.
I should set North as the minimum value and SE as the max value (most
suitable areas).
I should rescale the raster because I need to include it in an AHP method.
All rasters will be rescaled in a common 0-255 scale. 

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