Hi, This will not be a specific GRASS question. My friend and I tried to calculate NDVIs of same data set and results seem same to us. But checking statistics of each output we saw that statistics are very different. I mean, median, mean, std.dev values of Grass output and Erdas output are different. We couldn't find an explanation for this situation. What can be the reason for this?
PS: For NDVI, we used this formula: (NIR_Band - RED_Band) / (NIR_Band + RED_Band)
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