I have a set of GPS points (stored as a csv for now) and would like to import these points to ERDAS to find the DN values associated with each location.
I am able to import a SHP to ERDAS but the only way I have found of extracting the DN values is via the use of the Inquire tool.
This enables me to input the lat/lon values manually to find out the DN values but I was wondering whether I am missing a more efficient batch method for doing this using a txt / csv upload?!
Update: managed to solve this in QGIS using http://www.digital-geography.com/qgis-plugins-point-sampling-tool/