How do I add category names and/or colors to my downloaded CDL data in Erdas Imagine?
You first must build statsitics for the TIF file as outlined in the question above. To add category names, open the TIF in a Viewer and select Raster > Attributes. In the Raster Attribute Editor select Edit > Add Class Names. This new “Class Names” column can be populated manually or you can download this prepared DAT file located at: http://www.nass.usda.gov/research/Cropland/docs/cdl_class_names.zip. Unzip the DAT file and save it to your computer. Then in the Raster Attribute Editor highlight the “Class Names” column by left-clicking on the header of the Class Names column. Then right-click on the Class Names column and select the Import option. Specify the DAT file as the file to import and this will add all possible CDL class names to your TIF attribute table. To add the standard CDL colors to an Erdas Imagine attribute table, follow the instructions above except use this prepared cdl_colors.data file: http://www.nass.usda.gov/research/Cropland/docs/cdl_colors.zip.
