I have a 380MB Geotiff file. The file is a satellite image of a wilderness area. The image covers a huge area and I would like to cut out just the portion of the wilderness area that I will be travelling in. I hope to then get this image into my Delorme PN-60 GPS and coordinate the satellite image with a topo map of the same area.
I tried using uDig to crop the image but I couldn't figure out how to get it to work. If anyone can help with this and/or has any ideas I would greatly appreciate it.