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holoviz / datashader

Quickly and accurately render even the largest data.
http://datashader.org
BSD 3-Clause "New" or "Revised" License
3.32k stars 366 forks source link

Support for polars dataframes #1199

Open muendlein opened 1 year ago

muendlein commented 1 year ago

As Polars is becoming more and more popular I am wondering if there are any consideration to support its dataframes. Given the performance oriented focus of this package, it might be solid contender.

ianthomas23 commented 1 year ago

Yes, polars is certainly something we would like to add support for.

ivirshup commented 1 year ago

Other plotting libraries have been adding support for polars (and others) by supporting the __dataframe__ interchange protocol (https://data-apis.org/dataframe-protocol/latest/index.html)

I think this would be a great solution here as it would allow polars as well as other tabular libraries to be used with data shader.

My use case would be to provide a dataframe interface to plotting libraries from an AnnData object. This use case would rely on data shader only requesting the columns it actually needs for a plot, and not try to request every column of the dataframe..

ianthomas23 commented 1 year ago

Yes, it is a good idea. It just needs someone to volunteer to do the required work.

hathawayj commented 4 months ago

I wonder if Narwhals could be leveraged?