wip: Start brainstorming zarr integration#1179
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Designs a Python-proxied Zarr tile pipeline via RasterLayer.from_zarr and RasterLayer.from_xarray, reusing the existing GeoTIFF model. Async per-tile fetching via zarr-python 3 directly or xarray.load_async. JS-side raster model gains a generic TilesetDescriptor trait; TileMatrixSet becomes one descriptor shape. Scope narrowly to Python-rendered PNGs; WebGL rendering, animation, and RasterTileLayer refactor are deferred. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- Reorder CRS discovery priority: GeoZarr attrs now come first (before rioxarray and CF), since the primary from_xarray use case is xr.open_zarr on a GeoZarr store. - State more forcefully that rioxarray stays an optional dep; Lonboard must not pull GDAL transitively. - Replace "wait for first-tile error" with a construction-time BackendArray.async_getitem introspection, falling back to first-tile error only when the wrapped-array chain is opaque (dask, etc.). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Does xarray define any chunking natively? Lonboard needs to know the internal chunk size of the input dataset, or the user needs to pass them in. |
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Designs a Python-proxied Zarr tile pipeline via RasterLayer.from_zarr and RasterLayer.from_xarray, reusing the existing GeoTIFF model. Async per-tile fetching via zarr-python 3 directly or xarray.load_async. JS-side raster model gains a generic TilesetDescriptor trait; TileMatrixSet becomes one descriptor shape. Scope narrowly to Python-rendered PNGs; WebGL rendering, animation, and RasterTileLayer refactor are deferred.
Co-Authored-By: Claude Opus 4.7 (1M context) noreply@anthropic.com
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