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Calculate statics from two diffrent NDVI in ENVI


am2

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is easy just make in erdas, envi or arcgis and comparison between both NDVI and export the change site, if use erdas you can comparison both image and export the changes....regards

Thank you..I can get change map using change detection in Envi.But I need amount of area in m2 that has been changed..I want to extract statics from NDVI..I don't know how to explain :( 

I must classify NDVI again in case of getting area of each class in NDVI?

Hi am2

mmmmmmmm I need more info, is possible by IDL script for this

 

bye

Sorry I didn't work with IDL..Is is possible?Can you give me some more information how to do it?

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