--- Start of Idrisi List message Idrisians, I am using a multi-criteria evaluation (MCE) to identify areas that contain physical characteristics conducive to high baseflow production in area streams. I have identified 3 factors (physical attributes controlling the input, storage, and movement of water) and have ranked each based on its potential contribution to higher baseflow (very high, high, moderate, low, very low). Question: Is it more appropriate to scale these values linearly to the byte range (0-255) for use with MCE or would scaling them using a Sigmoidal distribution (FUZZY - fuzzy set membership function) be more appropriate? Cheers, Robert. --- End of Idrisi List message IDRISI-L is an unmoderated list. As a service to list users, please post a summary of useful responses to your questions. To post a message to IDRISI-L, send it to [EMAIL PROTECTED] To subscribe to the list, send an email from the address to be subscribed to [EMAIL PROTECTED] with "subscribe" (without quotes) as the first line of the message body. To unsubscribe, do the same, only with "unsubscribe" as the first line of the message body.