Setting colors for obsSets? about vitessce-python HOT 2 OPEN

vc.link_views_by_dict([spatial_view, another_view], {
    ct.OBS_COLOR_ENCODING: "cellSetSelection",
    ct.OBS_SET_SELECTION: [
        ["colname", "obs_set_one"],
        ["colname", "obs_set_two"],
    ],
    ct.OBS_SET_COLOR: [
        {
          "path": ["colname", "obs_set_one"],
           "color": [0, 12, 123],
        },
        {
          "path": ["colname", "obs_set_two"],
           "color": [240, 123, 58],
        },
    ]
}, meta=False)

Hi @srivarra this can be done with the above. The OBS_COLOR_ENCODING tells Vitessce whether to use the sets (categorical) vs. the gene expression values (quantitative) for colors. (For historical reasons the accepted values for this are the strings cellSetSelection or geneSelection despite moving to the more general obs prefix everywhere else). The OBS_SET_SELECTION is a list of paths for currently-selected sets. The OBS_SET_COLOR is a list of objects like { path, color } where color is an array of [r, g, b] values.

Thanks for the suggestion about using the adata.uns option, I did not know about the _colors convention in scanpy. I will make a new issue to track that

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@keller-mark Thank you very much! I'll go ahead and give this a try!

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