hello:) Iam a new envi user and i am trying to use svms for my classification project. The problem is how can i use training sets from different cubes.. short version: extract some classes from cube1, extract some classes from cube2, use all classes for classifing cube2 with svm long version: i use roi tool to determine small regions from cube1 and then save it . Then i do the the same forcube2. When i restore both rois, envi restores all the regions from  the current cube (cube2) and not from thecube1. I have done this numerous times with different cubes, even with different roi tool windows for the 2 cubes,but when i restore regions in one window (for cube1), the regions appear in both displays. Is there another way to do this (very simple) classification task? thank you very much-