issues: 42380133

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id node_id number title user state locked assignee milestone comments created_at updated_at closed_at author_association active_lock_reason draft pull_request body reactions performed_via_github_app state_reason repo type
42380133 MDExOlB1bGxSZXF1ZXN0MjEwMDA1NTc= 229 Support math with GroupBy objects 1217238 closed 0   740776 0 2014-09-10T05:50:08Z 2014-09-12T01:18:05Z 2014-09-12T01:18:04Z MEMBER   0 pydata/xarray/pulls/229

Fixes #203.

You can now calculate anomalies with something like:

python grouped = ds.groupby('time.month') anom = grouped - grouped.mean('time')

Still needs documentation (that will go in my current major refactor of the docs for v0.3).

 
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