I have a three images, each a single band (R,G,B) of a NAIP image of a study area. I first had it in ArcMap where the whole image was clipped, re-projected to a new projection, exported as an ASCII file and then imported into IDRISI. When I tried to combine the three bands into a composite it produced a solid white image (see attachment). The images have pyramids although I am not sure that has anything to do with this.
I have also tried other settings in the composite dialog box including selecting the "omit zeros..." option. It has been suggested that the clipping process might have something to do with the error, the black areas surrounding the photo... I don't know.
I have an attachment with images of what I am describing but the option to attach it to this post doesn't seem to be working, it just keeps loading. I can email it if you think it would help.
