issue_comments: 766983346

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https://github.com/pydata/xarray/issues/4789#issuecomment-766983346 https://api.github.com/repos/pydata/xarray/issues/4789 766983346 MDEyOklzc3VlQ29tbWVudDc2Njk4MzM0Ng== 14808389 2021-01-25T17:33:19Z 2021-01-26T21:59:20Z MEMBER

that seems to be the main issue. With ```diff diff --git a/xarray/core/formatting.py b/xarray/core/formatting.py index 282620e3..f825ed85 100644 --- a/xarray/core/formatting.py +++ b/xarray/core/formatting.py @@ -300,9 +300,11 @@ def _summarize_coord_multiindex(coord, col_width, marker):

def _summarize_coord_levels(coord, col_width, marker="-"): + indices = list(range(10)) + list(range(-10, 0)) + subset = coord[indices] return "\n".join( summarize_variable( - lname, coord.get_level_variable(lname), col_width, marker=marker + lname, subset.get_level_variable(lname), col_width, marker=marker ) for lname in coord.level_names ) `` I get a speed up of about 180x (forxr.DataArray(pd.Series(25_000_000, index=idx)), not sure if the speed-up is as significant for bigger arrays). We should probably make the shape ofindicesdepend oncol_width`, though.

 
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