I am trying to do the reverse / inverse of a euclidean distance in IDRISI (TerrSet). For example, I am doing distance to roads analysis. The output from the distance raster shows roads as 0 and areas closest to roads as 0.1, 0.2, etc and the areas furthest from roads as a very high value. However, I would like the raster to be the reverse of this - the areas closest to the roads should have the highest values and the areas furthest from the roads should have the lowest values.
How do I create a raster that reverses the number in IDRISI?
I would use reclass but this would be difficult to use as the values are continuous and not integers.
Is there a way to do this in reclass or raster calculator that I am not aware of for continuous values without overgeneralizing them?
Or is there a different tool that I can use?