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  • andreall · 3 ✖

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  • Is there a more efficient way to convert a subset of variables to a dataframe? · 3 ✖

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  • NONE · 3 ✖
id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions performed_via_github_app issue
661972749 https://github.com/pydata/xarray/issues/1086#issuecomment-661972749 https://api.github.com/repos/pydata/xarray/issues/1086 MDEyOklzc3VlQ29tbWVudDY2MTk3Mjc0OQ== andreall 25382032 2020-07-21T16:41:52Z 2020-07-21T16:41:52Z NONE

Hi @darothen , Thanks a lot..I hadn't thought of processing each file and then merging. Will give it a try, Thanks,

 
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   Is there a more efficient way to convert a subset of variables to a dataframe? 187608079
661940009 https://github.com/pydata/xarray/issues/1086#issuecomment-661940009 https://api.github.com/repos/pydata/xarray/issues/1086 MDEyOklzc3VlQ29tbWVudDY2MTk0MDAwOQ== andreall 25382032 2020-07-21T15:44:54Z 2020-07-21T15:46:06Z NONE

Hi,

``` import xarray as xr from pathlib import Path

dir_input = Path('.') data_ww3 = xr.open_mfdataset(dir_input.glob('*/' + 'WW3_EUR-11_CCCma-CanESM2_r1i1p1_CLMcom-CCLM4-8-17_v1_6hr_.nc'))

data_ww3 = data_ww3.isel(latitude=74, longitude=18) df_ww3 = data_ww3[['hs', 't02', 't0m1', 't01', 'fp', 'dir', 'spr', 'dp']].to_dataframe() ```

You can download one file here: https://nasgdfa.ugr.es:5001/d/f/566168344466602780 (3.5 GB). I did a profiler when opening 2 .nc files an it said the to_dataframe() call was the one taking most of the time.

I'm just wondering if there's a way to reduce computing time. I need to open 95 files and it takes about 1.5 hour.

Thanks, 

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   Is there a more efficient way to convert a subset of variables to a dataframe? 187608079
661775197 https://github.com/pydata/xarray/issues/1086#issuecomment-661775197 https://api.github.com/repos/pydata/xarray/issues/1086 MDEyOklzc3VlQ29tbWVudDY2MTc3NTE5Nw== andreall 25382032 2020-07-21T10:29:48Z 2020-07-21T10:29:48Z NONE

I am running into the same problem, this might be a long shot but @naught101 , do you remember if you managed to convert to dataframe in a more efficient way? Thanks,

 
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   Is there a more efficient way to convert a subset of variables to a dataframe? 187608079

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