<p>Are you seeing this in ERDAS or in ENVI? This forum is for ENVI users, so I am guessing that perhaps you misspoke, and this problem is happening in ENVI? Most of us here don't know much about how things work in ERDAS.</p> <p>I am afraid that I don't really follow your explanation of what you are seeing, and where you are seeing it. Would you mind explaining it again with a few more details (assuming that this is something you are seeing in ENVI and not in ERDAS)?</p> <p>- Peg</p>