Hello Before I classify my hyperspectral image i pull up my training ROIs and reconcile them to the original image and then perform max likelihood classification after that I pull up my testing ROIs and reconcile them to my classified image and then I go to post classification (ROC CURVES) but for some reason it wont bring up my testing files in add the combination ( my input parameters are input file is selected as the original image and the ground truth img is the classified image as it wont let me select any other option). Ideally it should give me the option of selecting a training with a testing file to add that combination. As a result I do not get any ROC curves either just a straight horizontal line ( my min and max threshold is 0 to 1) no of iterations is set to default 20 Can some one who has worked with this stuff have any inputs on what the problem is? I would greatly appreciate it coz i have spent hours trying to figure out and trying combinations of input parameters but still no luck