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I downloaded MODIS Vegetation Indices 16-day L3 Global 500m (MOD13A1) from which i only loaded NDVI value. but the range is 5.25478e+06 to 7.76892e+07. how should I convert it into normal NDVI range of -1 to 1

marked as duplicate by ArMoraer, lynxlynxlynx, tinlyx, BERA, Mapperz Aug 23 '17 at 14:49

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