issues: 115897556

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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
115897556 MDU6SXNzdWUxMTU4OTc1NTY= 649 error when using broadcast_arrays with coordinates 1197350 closed 0     5 2015-11-09T15:16:32Z 2015-11-10T14:27:41Z 2015-11-10T14:27:41Z MEMBER      

I frequently use broadcast_arrays to to feed xray variables to non-xray libraries (e.g. gsw.) Often I need to broadcast the coordinates and variables in order to do call functions that take both as arguments.

I have found that broadcast_arrays doesn't work as I expect with coordinates. For example

python import xray import numpy as np ds = xray.Dataset({'a': (['y','x'], np.ones((20,10)))}, coords={'x': (['x'], np.arange(10)), 'y': (['y'], np.arange(20))}) xbc, ybc, abc = xray.broadcast_arrays(ds.x, ds.y, ds.a)

This raises ValueError: an index variable must be defined with 1-dimensional data.

If I change the last line to

python xbc, ybc, abc = xray.broadcast_arrays(1*ds.x, 1*ds.y, ds.a)

it works fine.

 
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