issues: 159536177

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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
159536177 MDU6SXNzdWUxNTk1MzYxNzc= 878 Allow passing a default value (instead of ndarray) for data argument for DataArray 1063143 closed 0     3 2016-06-10T00:18:12Z 2019-08-26T20:36:36Z 2019-08-26T20:36:36Z NONE      

Hi,

First of all, thanks a lot for the amazing module. It seems when I create a DataArray, I have to pass a numpy.ndarray with a correct size for the data argument. It works well when I already have some data, but sometimes I want to create an "empty" DataArray with known coordinates and fill up the data later. For these cases, it would be great if xarray allows passing just a value for the data argument, and fill up all the elements of the array with the value. For example, with pandas, I can do:

python import pandas as pd test = pd.DataFrame(data=.1, index=range(100), columns=['col1', 'col2'])

and the resulting DataFrame would be:

``` python col1 col2 0 0.1 0.1 1 0.1 0.1 2 0.1 0.1 .. ... ... 97 0.1 0.1 98 0.1 0.1 99 0.1 0.1

[100 rows x 2 columns] ```

Thanks a lot!

 
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