issue_comments: 610705859

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https://github.com/pydata/xarray/issues/3954#issuecomment-610705859 https://api.github.com/repos/pydata/xarray/issues/3954 610705859 MDEyOklzc3VlQ29tbWVudDYxMDcwNTg1OQ== 6815844 2020-04-08T01:48:23Z 2020-04-08T01:48:23Z MEMBER

Hi, @zxdawn

Thank you for raising the issue. I think you need an actual value of z as your b.expand_dims('z') does not have a value for z but it only knows the z is the dimension name.

You can do like python b['z'] = 3 # add a scalar coordinate named 'z' to add a value (we call it coordinate) for z Then, your script will work, b = b.expand_dims('z') # expand 2d to 3d comb = xr.concat([a, b], dim='z')

 
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