feat: add origin property and set_origin() method - #443
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nathanjmcdougall merged 3 commits intoMay 20, 2026
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…lation Add Raster.origin property (getter + setter) and Raster.set_origin() immutable method to adjust the affine transform origin without modifying pixel data. This enables normalizing non-standard longitude conventions (e.g. -200 to -170 -> 160 to 190) before spatial operations. Closes #442
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May 19, 2026
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approved once spec is clarified
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nathanjmcdougall
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442-feature-request-shift_bounds-translate_bounds-method-for-longitude-wrapping
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May 20, 2026 00:00
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Summary
Adds
Raster.originproperty (getter + setter) andRaster.set_origin(*, x=None, y=None)immutable method to adjust the affine transform origin without modifying pixel data.Motivation
When working with ShakeMap rasters near the antimeridian, some source rasters arrive with non-standard longitude conventions (e.g. bounds from -200 to -170). This causes spatial operations like
to_bounds()to produce all-NaN output due to no overlap with standard EPSG:4326 bounds.Usage
Changes
Raster.originproperty (getter): returns(transform.c, transform.f)Raster.originsetter: mutates transform translation in place (notebook/interactive use)Raster.set_origin(*, x=None, y=None): returns new Raster with updated origin (pipeline use)docs/specs/2025-05-20-set-origin-design.mdCloses #442