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/2504#issuecomment-432998937,https://api.github.com/repos/pydata/xarray/issues/2504,432998937,MDEyOklzc3VlQ29tbWVudDQzMjk5ODkzNw==,11750960,2018-10-25T10:27:49Z,2018-10-25T10:27:49Z,CONTRIBUTOR,"```
ds = xr.open_dataset(grid_dir_nc+'Depth.nc', chunks={'face':1}, engine='h5netcdf')
% time print(ds.Depth.mean().values)
```
leads to:
```
CPU times: user 824 ms, sys: 50.4 ms, total: 875 ms
Wall time: 11.3 s
```
and
```
ds = xr.open_dataset(grid_dir_nc+'Depth.nc', chunks={'face':1}).load()
% time print(ds.Depth.mean().values)
```
to
```
CPU times: user 61.9 ms, sys: 22.4 ms, total: 84.3 ms
Wall time: 76.2 ms
```
much better ... thanks a lot for these two solutions.
","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,373449569
https://github.com/pydata/xarray/issues/2504#issuecomment-432672506,https://api.github.com/repos/pydata/xarray/issues/2504,432672506,MDEyOklzc3VlQ29tbWVudDQzMjY3MjUwNg==,11750960,2018-10-24T14:08:07Z,2018-10-24T14:08:07Z,CONTRIBUTOR,"additional information about the file:

```
(equinox) [pontea@visu01 LLC4320]$ ncdump -sh grid_nc/Depth.nc
netcdf Depth {
dimensions:
        i = 4320 ;
        j = 4320 ;
        face = 13 ;
variables:
        int64 i(i) ;
                i:standard_name = ""x_grid_index"" ;
                i:axis = ""X"" ;
                i:long_name = ""x-dimension of the t grid"" ;
                i:swap_dim = ""XC"" ;
                i:_Storage = ""contiguous"" ;
                i:_Endianness = ""little"" ;
        int64 j(j) ;
                j:standard_name = ""y_grid_index"" ;
                j:axis = ""Y"" ;
                j:long_name = ""y-dimension of the t grid"" ;
                j:swap_dim = ""YC"" ;
                j:_Storage = ""contiguous"" ;
                j:_Endianness = ""little"" ;
        int64 face(face) ;
                face:standard_name = ""face_index"" ;
                face:_Storage = ""contiguous"" ;
                face:_Endianness = ""little"" ;
        float Depth(face, j, i) ;
                Depth:_FillValue = NaNf ;
                Depth:standard_name = ""ocean_depth"" ;
                Depth:long_name = ""ocean depth"" ;
                Depth:units = ""m"" ;
                Depth:coordinate = ""XC YC"" ;
                Depth:_Storage = ""chunked"" ;
                Depth:_ChunkSizes = 1, 480, 480 ;
                Depth:_Endianness = ""little"" ;

// global attributes:
                :_SuperblockVersion = 0 ;
                :_IsNetcdf4 = 1 ;
                :_Format = ""netCDF-4"" ;
}
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,373449569