issue_comments

Table actions

2 rows where author_association = "MEMBER" and issue = 558293655 sorted by updated_at descending

✎ View and edit SQL

This data as json, CSV (advanced)

Suggested facets: created_at (date), updated_at (date)

user 2

issue 1

  • ValueError when trying to encode time variable in a NetCDF file with CF convensions · 2 ✖

author_association 1

  • MEMBER · 2 ✖
id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions performed_via_github_app issue
586978341 https://github.com/pydata/xarray/issues/3739#issuecomment-586978341 https://api.github.com/repos/pydata/xarray/issues/3739 MDEyOklzc3VlQ29tbWVudDU4Njk3ODM0MQ== mathause 10194086 2020-02-17T12:48:55Z 2020-02-17T12:48:55Z MEMBER

The following works (using assign_coords() instead of time.values=). I think you also forgot a str in date_range.

```python import numpy as np import xarray as xr import pandas as pd

files = ['ds_1.nc', 'ds_2.nc']

ds_test = xr.open_mfdataset(files, combine='nested', concat_dim='time', decode_cf=False) yr = 1988 # year dates = pd.date_range(start=str(yr), end=str(yr+1), freq='6H', closed='left') ds_test.assign_coords(time=dates[:2]) ds_test.time.encoding['units'] = "seconds since 1970-01-01 00:00:00" ds_test.time.encoding['calendar'] = "proleptic_gregorian" ds_test.to_netcdf('ds_1_2.nc')

```

The following works as well: python ds_test = xr.open_mfdataset(files, combine='nested', concat_dim='time') ds_test.time.encoding['units'] = "seconds since 1970-01-01 00:00:00" ds_test.to_netcdf('ds_1_2.nc')

However, what does indeed not work is the following

python ds_test = xr.open_mfdataset(files, combine='nested', concat_dim='time') ds_test.time.attrs['units'] = "seconds since 1970-01-01 00:00:00" ds_test.to_netcdf('ds_1_2.nc') which I don't entirely understand, because ds_test.time.encoding is empty. So maybe there is an encoding hidden somewhere, but I couldn't find it.

 
{
    "total_count": 0,
    "+1": 0,
    "-1": 0,
    "laugh": 0,
    "hooray": 0,
    "confused": 0,
    "heart": 0,
    "rocket": 0,
    "eyes": 0
}
   ValueError when trying to encode time variable in a NetCDF file with CF convensions 558293655
580860461 https://github.com/pydata/xarray/issues/3739#issuecomment-580860461 https://api.github.com/repos/pydata/xarray/issues/3739 MDEyOklzc3VlQ29tbWVudDU4MDg2MDQ2MQ== rabernat 1197350 2020-01-31T18:46:19Z 2020-01-31T18:46:19Z MEMBER

Hi @avatar101 - thanks for your issue!

I couldn't fully reproduce your example, since it references files that I don't have access to. For the future, please consider trying to create a "Minimal, Complete and Verifiable Example" (MCVE): (http://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports)

In the meantime, I do have a suggestion you could try. Instead of python ds_test.time.attrs['units'] = "Seconds since 1970-01-01 00:00:00" try python ds_test.time.encoding['units'] = "Seconds since 1970-01-01 00:00:00"

The reason is that, since you have created your time coordinate using pd.date_range, which returns a datetime64 dtype, that variable is already considered to be encoded.

 
{
    "total_count": 0,
    "+1": 0,
    "-1": 0,
    "laugh": 0,
    "hooray": 0,
    "confused": 0,
    "heart": 0,
    "rocket": 0,
    "eyes": 0
}
   ValueError when trying to encode time variable in a NetCDF file with CF convensions 558293655

Advanced export

JSON shape: default, array, newline-delimited, object

CSV options: 

CREATE TABLE [issue_comments] (
   [html_url] TEXT,
   [issue_url] TEXT,
   [id] INTEGER PRIMARY KEY,
   [node_id] TEXT,
   [user] INTEGER REFERENCES [users]([id]),
   [created_at] TEXT,
   [updated_at] TEXT,
   [author_association] TEXT,
   [body] TEXT,
   [reactions] TEXT,
   [performed_via_github_app] TEXT,
   [issue] INTEGER REFERENCES [issues]([id])
);
CREATE INDEX [idx_issue_comments_issue]
    ON [issue_comments] ([issue]);
CREATE INDEX [idx_issue_comments_user]
    ON [issue_comments] ([user]);