Add GDALDataset::[Get|Compute]InterBandCovarianceMatrix() and corresponding C and Python API #13509
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…onding C and Python API This generates and reads STATISTICS_COVARIANCES band metadata items as done by ArcGIS: https://pro.arcgis.com/en/pro-app/3.4/tool-reference/spatial-analyst/how-band-collection-statistics-works.htm which is consistant with the results of numpy.cov()
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… when -fiopenmp is enabled
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… when all values in a block are valid
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This generates and reads STATISTICS_COVARIANCES band metadata items as done by ArcGIS:
https://pro.arcgis.com/en/pro-app/3.4/tool-reference/spatial-analyst/how-band-collection-statistics-works.htm
which is consistant with the results of numpy.cov(): https://numpy.org/devdocs//reference/generated/numpy.cov.html