xarray support

Is it possible or planned that xarray be supported natively?

You can't pass in Datasets or DataArrays directly to altair. Using .to_dataframe() doesn't quite work either because xarray creates a hierarchical index, which are not supported.

However, you can reset the index to flatten out the DataFrame.

my_xr_dataset = calc_res.isel(component=1)

df = my_xr_dataset.to_dataframe()
df.reset_index(inplace=True)

alt.Chart(df).mark_circle().encode(
    x='X',
    y='GM',
    color='Phase',
).interactive()

You still have to slice up the Dataset yourself (the point limit can be somewhat limiting unless you slice up the Dataset).

Thoughts?

Tracking

• https://github.com/vega/vega-lite/issues/6043
• https://github.com/vega/vega-lite/issues/9389
• https://github.com/vega/vega/issues/3949
• https://github.com/vega/vega/issues/3950