html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/issues/3445#issuecomment-551359502,https://api.github.com/repos/pydata/xarray/issues/3445,551359502,MDEyOklzc3VlQ29tbWVudDU1MTM1OTUwMg==,10554254,2019-11-08T02:41:13Z,2019-11-08T02:41:13Z,NONE,"@El-minadero from the [sparse API](https://sparse.pydata.org/en/latest/generated/sparse.html) page I'm seeing two methods for combining data:

```python
import sparse
import numpy as np

A = sparse.COO.from_numpy(np.array([[1, 2], [3, 4]]))
B = sparse.COO.from_numpy(np.array([[5, 9], [6, 8]]))
sparse.stack([A,B]).todense()

Out[1]:
array([[[1, 2],
        [3, 4]],
       [[5, 9],
        [6, 8]]])

sparse.concatenate([A,B]).todense()

Out[2]:
array([[1, 2],
       [3, 4],
       [5, 9],
       [6, 8]])
```
Since this is an issue with `sparse` and merging data doesn't seem to be supported at this time, you might consider closing this issue out here and raising it over at [sparse](https://github.com/pydata/sparse/issues).
","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,512205079
https://github.com/pydata/xarray/issues/3445#issuecomment-550516745,https://api.github.com/repos/pydata/xarray/issues/3445,550516745,MDEyOklzc3VlQ29tbWVudDU1MDUxNjc0NQ==,10554254,2019-11-06T21:51:31Z,2019-11-06T21:51:31Z,NONE,"Note that `dataset1 = xr.concat([data_array1,data_array2],dim='source')` or `dim='receiver'` seem to work, however, concat also fails if `time` is specified as the dimension.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,512205079