I have a grid (in .img format) with pixel values ranging from -10,000 to 10,000, which i would like to contour. but i would like to contour only -3000 to 0 range. is this possible to set this up during contouring? or is there a way i can restrict the raster grid to display only -3000 to 0 before i start contouring?
Using Arc 9.3.1, with one extension (spatial analyst), nothing else.