Do I need any special type of GIS or image processing software to view the CDL?
If you already have GIS capability, you should have no trouble working with the CDL datasets. If you do not have software capable of viewing Geotiff (.tif) or ERDAS Imagine (.img) file formats then we suggest using the freeware browser ESRI ArcReader. Some users have reported issues with viewing the CDL using ENVI software. NASS suggests using the GeoTIFF file format with ENVI and ensuring that the three associated files (.tif, .tfw, and .aux) are all kept together. ENVI version 4.4/ENVI Zoom now will open the CDL without issue.
If you already have GIS capability, you should have no trouble working with the CDL datasets. If you do not have software capable of viewing Geotiff (.tif) file format then we suggest using the freeware browser ESRI ArcReader. Some users have reported issues with viewing the CDL using ENVI software. NASS suggests using the GeoTIFF file format with ENVI and ensuring that the three associated files (.tif, .tfw, and .aux) are all kept together. ENVI version 4.4/ENVI Zoom now will open the CDL without issue.