Speed up RASTER_Clip #676
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Speed up RASTER_Clip #676
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Komzpa
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Mar 17, 2022
kalenikaliaksandr
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These changes improve performance of raster clip by "inlining" of
rt_raster_iterator. Althoughrt_raster_iteratoris very useful generic function that allows to merge several rasters but as I discovered it's pretty inefficient in terms of memory usage when it comes to simple case like clipping (for example several separate allocations for every pixel in a band is pretty crazy). With this change I see 1.3x-1.7x speed up for my input data.