In GDALDataset, lazy compute of band min max for cell type #3162
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Reinstates the lazy declaration of this variable as in https://github.com/geotrellis/geotrellis-gdal/pull/40/files#diff-5e19e2811cf054c87ebc2afd642ebaa3R64 Signed-off-by: Jason T. Brown <[email protected]>
Signed-off-by: Jason T. Brown <[email protected]>
pomadchin
approved these changes
Dec 9, 2019
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Overview
Reinstates the lazy declaration of the raster band min max variable as in https://github.com/geotrellis/geotrellis-gdal/pull/40/files#diff-5e19e2811cf054c87ebc2afd642ebaa3R64
That lazy declaration has a subtle role with the by-name min max parameter in
GDALUtils.dataTypeToCellType. If notlazy, then the min-max is computed even though it is only used in one case. This can result in a lot of unnecessary I/O.Checklist
docsguides update, if necessaryNotes
This change is only oriented at improving performance. It should not change any behavior in the computation of the CellType.
Closes #3148