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/1844#issuecomment-359406359,https://api.github.com/repos/pydata/xarray/issues/1844,359406359,MDEyOklzc3VlQ29tbWVudDM1OTQwNjM1OQ==,1889878,2018-01-22T12:12:57Z,2018-01-22T12:12:57Z,NONE,Thanks a lot for the help!,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,290023410
https://github.com/pydata/xarray/issues/1844#issuecomment-359066317,https://api.github.com/repos/pydata/xarray/issues/1844,359066317,MDEyOklzc3VlQ29tbWVudDM1OTA2NjMxNw==,1889878,2018-01-19T19:31:43Z,2018-01-19T19:43:38Z,NONE,"I end up doing the following:
```
# dset, mean, std - all XArray objects as explained above
time_index = dset.time.dt.dayofyear
dset_mean = mean.sel(dayofyear=time_index)
dset_std = std.sel(dayofyear=time_index)
new_dset = ((dset - dset_mean) / dset_std).drop(""dayofyear"")
```
One issue though is that this quite bad on memory as it constructs 3 arrays in memmory as large as the original one. If anoyne has any suggestion on how to improve this I would be very grateful. Also is it possible to compute and store `new_dset` simutlanously so I don't create it in memory?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,290023410
https://github.com/pydata/xarray/issues/1844#issuecomment-359061384,https://api.github.com/repos/pydata/xarray/issues/1844,359061384,MDEyOklzc3VlQ29tbWVudDM1OTA2MTM4NA==,1889878,2018-01-19T19:12:23Z,2018-01-19T19:12:23Z,NONE,"Thanks for the suggestion. However, option 2 and 3 are not really options, as after this, I need to provide the standardized field with the original time index. I'm using Xarray for the first time but will try to do the reindexing. ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,290023410