For mapping purpose, CLASS is able to produce images at the GILDAS\ format. GILDAS (the Grenoble Image and Line Data Analysis System) is an ensemble of routines which is able to process images of up to four dimensions. It contains a variety of routines to transpose, resample, reproject, smooth, add, merge, divide, etc... images, and a superset of GreG which allows to produce contour plots from these images. Other programs can also do false color displays of the images on image processors.