If you are trying to take pixels that are incorrectly shown as 'Bare Soil' in your classification result, and change them to 'Glacier' in that classified image, there are a couple of ways to approach this. One is to just change their pixel values. ENVI doesn't provide a lot of tools for that type of editing, because most ENVI users are interested in preserving the integrity of the classification itself, so that it can be evaluated and improved. But if you don't care about that, then there is a tool in ENVI Classic that lets you just point at a pixel and change its value. It is called the Spatial Pixel Editor, and you can find it by displaying an image, then going to the Tools menu in the resulting display menu. Another option is to try to improve the classification itself. So, for example, you might redraw the ROI that you use to define your Glacier class, so that it includes pixels in the shadows, etc. Then the resulting classification may do a better job of naturally including those pixels in the 'Glacier' class. Peg Exelis VIS

Good afternoon Peg, thank you for your answer. I did try to improve the classification before posting and it worked out fine up to a certain degree. Now when the shadow is too dark then the pixel go into another class (lake class). I also tried the different algorithms. The SAM was great but then the 'Glacier' surface was extended too much. I need, for Land Cover purposes, to reclass those pixels, they can't be classified as bare soils where they are. I tried to find the Spatial Pixel Editor but I am using ENVI 5.2. Does it have a different name? Thank you for your time I really appreciate. Sylvie

It is in ENVI Classic 5.2 (and earlier versions of ENVI Classic too). This is a separate application that is installed at the same time that ENVI 5.2 is installed. You can find it from the Start menu (on Windows), under ENVI 5.2 > Tools. Peg

Oh great! Thank you so much! Sylvie