Numba/CUDA projection kernels for reproject, README update#1046

Merged

brendancol merged 49 commits intogeotiff-reader-writerfrom

Mar 23, 2026

Commits on Mar 21, 2026

Commits on Mar 22, 2026

Support US survey foot and international foot units (#1045)
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Add projection benchmark table to README, fix dispatch for custom CRS (#1045)
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Add GPU column and inline speedups to projection benchmark table (#1045)
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Add CUDA kernels for Sinusoidal, LAEA, Polar Stere, State Plane (#1045)
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Guard Numba dispatch against non-WGS84 datums (#1045)
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Add NAD27 datum support via geocentric Helmert shift (#1045)
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Add CUDA resampling kernels for end-to-end GPU reproject (#1045)
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Add merge benchmark: xrspatial vs rioxarray (#1045)
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Fast same-CRS merge and early-exit in numba dispatch (#1045)
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Replace coordinate-only benchmarks with end-to-end reproject/merge tables (#1045)
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Dask+CuPy reproject: single-pass GPU instead of per-chunk (#1045)
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Chunked dask+cupy reproject without full-source eager compute (#1045)
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Add NADCON grid-based datum shift for sub-meter NAD27 accuracy (#1045)
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Vendor 14 datum shift grids for worldwide sub-meter accuracy (#1045)
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Add vertical datum support with vendored EGM96 geoid (#1045)
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Add time-dependent ITRF frame transforms (#1045)
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7-parameter Helmert and 6-term authalic latitude series (#1045)
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Add oblique stereographic and oblique Mercator kernels (disabled) (#1045)
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Fix oblique stereographic with Gauss conformal sphere (#1045)
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2D Numba kernels for LCC/tmerc: eliminate tile/repeat + fuse unit conv (#1045)
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Fix longitude wrapping in all projection inverses (#1045)
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Relax resampling boundary check to match GDAL behavior (#1045)
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Match GDAL's bilinear weight renormalization (#1045)
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Harden reproject: thread safety, NaN crash, uint8 overflow (#1045)
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Fix cubic NaN, add merge tests, validate grids, improve docs (#1045)
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Integrate vertical datum shift into reproject() (#1045)
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Skip pyproj Transformer in chunk worker when Numba handles transform (#1045)
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Commits on Mar 23, 2026