I have downloaded NDVI MODIS 500m image i.e. MOD13A1. From the hdf format that i got i converted them into tif format using the HEG tool. The images that i got some are showing pixel values -32767 to 32768; some images are showing from -2000 to 10156. How do i use the scale factor 0.0001 in such case to get NDVI values from -1 to 1 .
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