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Processing raster rank algorithm#60605

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Commits on Feb 25, 2025

• [processing] Brand new raster rank algorithm

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• Proper handling of no data values

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• Add a parameter to define NoData handling behavior

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• Allow for negative rank value for reverse ranking

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• Handle non-square cells

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• Add test coverage

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• Allow for multiple ranks to be computed at once, with the output raster adopting one band per rank

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• Add missing test reference image

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• Optimize further by iterating using QgsRasterIterator

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