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different results in NDVI

Question asked by mv_kocemba on Oct 24, 2018
Latest reply on Oct 24, 2018 by vinayv-esristaff

Hello all, 

 

I am working with a Landsat 8 scene and realised that I achieve different results for the NDVI if I do it manually by using the raster calculator or via the option that can be found in the image analysis tool. Can someone tell me why that is so? I've only realised about the possibility to automatically calculate the NDVI via the image analysis window and would out of habit prefer the raster calculator mode, but if someone could tell me the difference, I would be very thankful. 

with kind regards
Michele 

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