Hi Guys, I am a new to use ARGIS , and I need to apply change detection methods. I have three landsat images 1990 -2000 and 2013 and I need to evaluate the urban changes during the past 20 years. I have done Image differencing for the 1990 and 2000 images using ARCGIS 10.1, I had a raster images with values from 213 to -69. My question is that how I can calculate the changes in the urban areas? is what I have done is right so far? your help guys is much appreciated! Thanks MK
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