Hi, Has anyone had used the random sampling tool much? Once you have generated random samples from a single ROI is there a way to then separate those samples into 2 different ROI's that contain non-repeating pixels among the two? I can generate two random samples from the same ROI, but some of the pixels overlap. I'm trying to save some time… hoping that I do not have to create the wheel (IDL code) on this one (lol)! If anyone has some suggestions or an old piece of code for this, I would really appreciate it! Cheers! Sean Moudy