<p>I am using ENVI 5.3 in Windows 10. I need to create a new smaller raster image from an existing raster that is a tif file. I was under the impression I could do this by using the ROI Tool. I have tried this by creating an ROI from geometry, as instructed on this webpage
http://www.exelisvis.com/...ol.html#ROIGeometry. I draw the rectangle over the raster and make its color solid, then rename it. I have tried saving it, and the only format available is xml. When I export as a shapefile, it does not show up in the folder I specified, and ENVI can't find it either. When I export it as an roi file, it does not appear when I load it in ENVI. How can I make a new smaller raster? Do I need to use another tool? Thank You!</p>