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vectorized polyfill #309

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geoHeil opened this issue Jan 25, 2023 · 2 comments
Open

vectorized polyfill #309

geoHeil opened this issue Jan 25, 2023 · 2 comments

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@geoHeil
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geoHeil commented Jan 25, 2023

https://stackoverflow.com/questions/75235467/how-to-parallelize-a-pandas-udf-in-polars-h3-polyfill-for-string-typed-udf-out/75235973#75235973

add support for vectorized polyfill function to fill a polygon with H3 hexagons.
@kylebarron
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Separate from h3-py, there's existing h3-polars support, but it doesn't look like there's a python binding for that yet https://github.com/nmandery/h3ron/tree/main/h3ron-polars cc @nmandery

@nmandery
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@geoHeil This function runs polyfill etc. on the contents of a geopandas GeoSeries distributing the individual geometries to a thread-pool. https://github.com/nmandery/h3ronpy/blob/20f892e80f24e92afe3030b217456e395ee4ca11/h3ronpy/vector.py#L36 Maybe thats of help for you, but well, thats still build upon geopandas.

Regarding the polars integration: I want to look into porting that to h3o first, mainly to benefit from the stronger typing first.

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@nmandery @geoHeil @kylebarron