emirhartato/pysal
PySAL is an open source cross-platform library of spatial analysis functions written in Python. It is intended to support the development of high level applications for spatial analysis.
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Discovered Oct 7, 2026
emirhartato / NDVI-Change
This script is designed to compare Normal Difference Vegetation Index (NDVI) of two raster images (EO-1, multispectral) in Bali with different time (2011 and 2014) using GDAL and NumPy. Each raster is converted into set of array then NDVI is calculated (NIR - RED / NIR + RED). After that, NDVI difference between both image is calculated by subtraction and result is converted to absolute value. The result is a new raster file which contains NDVI value difference to identify vegetation changes where higher value (lighter pixel) indicating massive vegetation changes over three years period.
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