--- Start of Idrisi List message Hi I've just joined this list, I live in Missouri where I am a novice in the GIS field. I require a step by step procedure for the masking of an image in IDRISI. I am using both supervised and unsupervised classificaion for land cover and wish to exclude a majority of the aerial image to prevent classification of unwanted areas (the wanted area is an irregular shape). What I have done thus far: * Original geo-rectified image was a TIF file... converted to an IDRISI native image through tifidris (24-bit); * New image split up into 3 bands with the use of Bipidris (8-bit / 24-bit) for some classification modules; * Both images from Bipidris (8-bit / 24-bit) formed with their respective bands as two images in Composite (8-bit / 24-bit, saturation - 2.5%) for unsupervised classification. This is where I have got up to... in carrying out the various ways to classify the imagary, I have come up with areas that are not to be included... so I was wondering if anyone out there could give some instructions on how to 'mask' the image?? Is it easy to do?? Cheers, Morgan Feilen Missouri _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. --- 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.
