Here's the situation (forgive the long lead-up). I have a Landsat 8 image. When downloaded from GloVis each of the bands 1 through 11 is a seperate TIFF image. I will not be using bands 1, 9, 10, or 11 for my evaluation, so I open bands 2-8 in ENVI Classic and create a stacked image of all of those bands (the bands are ordered 2, 3, 4, 5, 6, 7, 8). If I then want to create an NDVI image, which bands do I designate as Red and NIR in the NDVI dialog box. I know that technically those are the bands 4 and 5 in Landsat 8, but when you designate the bands in the dialog box for a stacked image is it able to 'see' that the red band (band 4) is now in the 3rd position of the stacked image and band 5 is in the 4th position? Should I set the bands in the dialog box to 3 and 4 because of the position of the bands in the stacked image or 4 and 5 as those are the actual bands? I've never had to worry about this before, always used Landsat 7 where 3 was in the third position, 4 was in the fourth, etc. Maybe a future SP will add Landsat 8 functionality, but what is the 'work around' in the meantime? Any ideas/experience/suggestions?