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/6103#issuecomment-999838503,https://api.github.com/repos/pydata/xarray/issues/6103,999838503,IC_kwDOAMm_X847mFMn,1191149,2021-12-22T20:17:38Z,2021-12-22T20:17:38Z,CONTRIBUTOR,I wish delete was an option... I see now that the artifact starts in pandas.to_xarray.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1087160635
https://github.com/pydata/xarray/pull/5875#issuecomment-945859209,https://api.github.com/repos/pydata/xarray/issues/5875,945859209,IC_kwDOAMm_X844YKqJ,1191149,2021-10-18T14:53:45Z,2021-10-18T14:53:45Z,CONTRIBUTOR,This makes sense to me. These attributes more fully describe the independent variable. They were added due to a lack of clarity and to allow better unit handling on the independent variable. Thank you for updating the test.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1029142676
https://github.com/pydata/xarray/issues/3711#issuecomment-578259713,https://api.github.com/repos/pydata/xarray/issues/3711,578259713,MDEyOklzc3VlQ29tbWVudDU3ODI1OTcxMw==,1191149,2020-01-24T19:06:34Z,2020-01-24T19:06:34Z,CONTRIBUTOR,"Let me know if you need my input, but I think the testcase solution is more general than PseudoNetCDF.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,552896124
https://github.com/pydata/xarray/issues/3711#issuecomment-576848923,https://api.github.com/repos/pydata/xarray/issues/3711,576848923,MDEyOklzc3VlQ29tbWVudDU3Njg0ODkyMw==,1191149,2020-01-21T19:46:14Z,2020-01-21T19:46:14Z,CONTRIBUTOR,"I want to make sure I understand the genesis of the error. My guess is that if you added a `print(k)` statement, you'd see that this is failing on the VGLVLS attribute. Is that right?

If so, I'm guessing the error is that VGLVLS is not a scalar. NetCDF files and uamiv files may have attributes with values. This is the case for VGLVLS in the IOAPI format, which uamiv is made to emulate.

As a result, `compatible` is an array not a scalar. A simple solution would be to wrap `compatible` in a call to `all`.

Can you confirm which attribute this is failing on and what the value of `compatible` is when it fails?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,552896124
https://github.com/pydata/xarray/issues/3434#issuecomment-549407230,https://api.github.com/repos/pydata/xarray/issues/3434,549407230,MDEyOklzc3VlQ29tbWVudDU0OTQwNzIzMA==,1191149,2019-11-04T15:30:08Z,2019-11-04T15:30:08Z,CONTRIBUTOR,Got it. This is a test update to a test that is backward and forward compatible. I'll get something checked in.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,510915725
https://github.com/pydata/xarray/issues/3434#issuecomment-548458836,https://api.github.com/repos/pydata/xarray/issues/3434,548458836,MDEyOklzc3VlQ29tbWVudDU0ODQ1ODgzNg==,1191149,2019-10-31T16:29:32Z,2019-10-31T16:29:32Z,CONTRIBUTOR,"I believe there are two issues here.

First, the 3.1 release was not 2.7 compliant. It mixed named keyword arguments with `**kwds`. That could be fixed easily.

Second, the camx reader changed subclasses, which affects the xarray test for CF variables. I could update the test that would fix xarray test-case.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,510915725
https://github.com/pydata/xarray/pull/3420#issuecomment-544316240,https://api.github.com/repos/pydata/xarray/issues/3420,544316240,MDEyOklzc3VlQ29tbWVudDU0NDMxNjI0MA==,1191149,2019-10-21T01:32:54Z,2019-10-21T01:32:54Z,CONTRIBUTOR,Thank you. I need to update the xarray tests.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,509655174
https://github.com/pydata/xarray/pull/3420#issuecomment-544305635,https://api.github.com/repos/pydata/xarray/issues/3420,544305635,MDEyOklzc3VlQ29tbWVudDU0NDMwNTYzNQ==,1191149,2019-10-20T23:53:52Z,2019-10-20T23:53:52Z,CONTRIBUTOR,I see you already did move back to 3.0.2. Can you point me to a log where the problem exists to get me started?,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,509655174
https://github.com/pydata/xarray/pull/3420#issuecomment-544305036,https://api.github.com/repos/pydata/xarray/issues/3420,544305036,MDEyOklzc3VlQ29tbWVudDU0NDMwNTAzNg==,1191149,2019-10-20T23:45:06Z,2019-10-20T23:45:06Z,CONTRIBUTOR,"As a temporary fix, you can change xarray to require 3.0.2, which did not have this issue. I'll look into it.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,509655174
https://github.com/pydata/xarray/pull/1905#issuecomment-393854456,https://api.github.com/repos/pydata/xarray/issues/1905,393854456,MDEyOklzc3VlQ29tbWVudDM5Mzg1NDQ1Ng==,1191149,2018-06-01T11:35:41Z,2018-06-01T11:35:41Z,CONTRIBUTOR,"@shoyer - Thanks for all the help and guidance. I learned a lot. In the development version of pnc, it is now flake8 compliant. I now use pytest to organize my unittests. I have TravisCI implemented. I have a conda-forge recipe. 

I’m grateful for the interactions. ","{""total_count"": 1, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 1, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,296561316
https://github.com/pydata/xarray/pull/1905#issuecomment-390963574,https://api.github.com/repos/pydata/xarray/issues/1905,390963574,MDEyOklzc3VlQ29tbWVudDM5MDk2MzU3NA==,1191149,2018-05-22T11:56:37Z,2018-05-22T11:56:37Z,CONTRIBUTOR,"The two failures were not pnc:

```
xarray/tests/test_backends.py::TestRasterio::test_serialization FAILED   [ 26%]
...
xarray/tests/test_backends.py::TestDataArrayToNetCDF::test_open_dataarray_options FAILED [ 26%]
```

Neither seems related to PNC at all...

I'm pulling the master and remerging to see if that helps...
","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,296561316
https://github.com/pydata/xarray/pull/1905#issuecomment-386830815,https://api.github.com/repos/pydata/xarray/issues/1905,386830815,MDEyOklzc3VlQ29tbWVudDM4NjgzMDgxNQ==,1191149,2018-05-05T19:56:44Z,2018-05-05T19:56:44Z,CONTRIBUTOR,"Depends on the format and expected size of data in that format. Some formats support lazy; others load immediately into memory.  Sill others use memmaps, so that virtual memory is used immediately.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,296561316
https://github.com/pydata/xarray/pull/1905#issuecomment-385182103,https://api.github.com/repos/pydata/xarray/issues/1905,385182103,MDEyOklzc3VlQ29tbWVudDM4NTE4MjEwMw==,1191149,2018-04-28T14:58:47Z,2018-04-28T14:58:47Z,CONTRIBUTOR,"> I trust that none of the other formats PNC supports use _FillValue, add_offset or scale_factor attributes?

The challenge here is that if specific formats use a similar functionality, it has already been applied and may or may not use the CF keywords. So, it should be disabled by default.

> If it is possible to detect the inferred file format from PNC, then another option (other than requiring the explicit format argument) would be to load the data and raise an error if the detected file format is netCDF.

I was worried this would be hard to implement, but it was actually easier. So that is what I did.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,296561316
https://github.com/pydata/xarray/pull/1905#issuecomment-383302806,https://api.github.com/repos/pydata/xarray/issues/1905,383302806,MDEyOklzc3VlQ29tbWVudDM4MzMwMjgwNg==,1191149,2018-04-21T14:52:10Z,2018-04-21T14:52:10Z,CONTRIBUTOR,"I tried disabling mask and scale, but many other tests fail. At its root this is because I am implicitly supporting netCDF4 and other formats.

I see two ways to solve this. Right now, it is only important to add non-netcdf support to xarray via PseudoNetCDF. I am currently allowing dynamic identification of the file format, which implicitly supports netCDF. I could disable implicit format support, and require the format keyword. In that case, PseudoNetCDF tests no longer should be CFEncodedDataTest. Instead, I can simply test some round tripping with the other formats (uamiv and possibly adding one or two other formats).

What do you think?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,296561316
https://github.com/pydata/xarray/pull/1905#issuecomment-382703923,https://api.github.com/repos/pydata/xarray/issues/1905,382703923,MDEyOklzc3VlQ29tbWVudDM4MjcwMzkyMw==,1191149,2018-04-19T11:40:53Z,2018-04-19T11:40:53Z,CONTRIBUTOR,Anything else needed?,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,296561316
https://github.com/pydata/xarray/pull/1905#issuecomment-378247961,https://api.github.com/repos/pydata/xarray/issues/1905,378247961,MDEyOklzc3VlQ29tbWVudDM3ODI0Nzk2MQ==,1191149,2018-04-03T13:22:23Z,2018-04-03T13:22:23Z,CONTRIBUTOR,"The conda recipe was approved and merged. Feedstock should be ready soon.

https://github.com/conda-forge/staged-recipes/pull/5449","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,296561316
https://github.com/pydata/xarray/pull/1905#issuecomment-378093157,https://api.github.com/repos/pydata/xarray/issues/1905,378093157,MDEyOklzc3VlQ29tbWVudDM3ODA5MzE1Nw==,1191149,2018-04-03T00:51:19Z,2018-04-03T00:51:19Z,CONTRIBUTOR,I've added the latest version to pip. Still waiting on the recipe in conda-forge.,"{""total_count"": 1, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,296561316
https://github.com/pydata/xarray/pull/1905#issuecomment-377100408,https://api.github.com/repos/pydata/xarray/issues/1905,377100408,MDEyOklzc3VlQ29tbWVudDM3NzEwMDQwOA==,1191149,2018-03-29T02:28:29Z,2018-03-29T02:28:29Z,CONTRIBUTOR,"@fujiisoup - I have a recipe in conda-forge that is passing all tests. Do you know how long it typically takes to get added or what I need to do to get it added?

https://github.com/conda-forge/staged-recipes/pull/5449","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,296561316
https://github.com/pydata/xarray/pull/1905#issuecomment-376367463,https://api.github.com/repos/pydata/xarray/issues/1905,376367463,MDEyOklzc3VlQ29tbWVudDM3NjM2NzQ2Mw==,1191149,2018-03-27T01:41:25Z,2018-03-27T01:41:25Z,CONTRIBUTOR,"Help me understand, there are now failures in scipy that seem unrelated to my changes. In fact, I had to switch the writer in my tests to netcdf4 to bypass the scipy problem. Is this going to hold up my branch?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,296561316
https://github.com/pydata/xarray/pull/1905#issuecomment-376364948,https://api.github.com/repos/pydata/xarray/issues/1905,376364948,MDEyOklzc3VlQ29tbWVudDM3NjM2NDk0OA==,1191149,2018-03-27T01:25:55Z,2018-03-27T01:25:55Z,CONTRIBUTOR,I have added a recipe to conda-forge and it is passing all tests. I don't know when it will be in feedstock.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,296561316
https://github.com/pydata/xarray/pull/1905#issuecomment-370996905,https://api.github.com/repos/pydata/xarray/issues/1905,370996905,MDEyOklzc3VlQ29tbWVudDM3MDk5NjkwNQ==,1191149,2018-03-07T02:04:46Z,2018-03-07T02:04:46Z,CONTRIBUTOR,"I only mean to comment, not close and comment.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,296561316
https://github.com/pydata/xarray/pull/1905#issuecomment-370950246,https://api.github.com/repos/pydata/xarray/issues/1905,370950246,MDEyOklzc3VlQ29tbWVudDM3MDk1MDI0Ng==,1191149,2018-03-06T22:21:52Z,2018-03-06T22:21:52Z,CONTRIBUTOR,@bbakernoaa - It may be a bit. I'm ,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,296561316
https://github.com/pydata/xarray/pull/1905#issuecomment-366533315,https://api.github.com/repos/pydata/xarray/issues/1905,366533315,MDEyOklzc3VlQ29tbWVudDM2NjUzMzMxNQ==,1191149,2018-02-18T17:46:48Z,2018-02-18T17:46:48Z,CONTRIBUTOR,"> Indexing support. Do you only support basic-indexing like x[0, :5] or is indexing with integer arrays also supported?

My variable objects present a pure numpy array, so they follow numpy indexing precisely with one exception. If the files are actually netCDF4, they have the same limitations of the netCDF4.Variable object.

> Serialization/thread-safety. Can we simultaneously read a file with another process or thread using dask?

I have not tested separate processes. In many cases, I use numpy memmap. So that will be the limitation.

> API consistency for scalar arrays. Do these require some sort of special API compared to non-scalar arrays?

Same as numpy, but also has support for the netCDF4 style.

> Data types support. Are strings and datetimes converted properly into the format xarray expects?

I use relative dates following netcdf time conventions. Within my software, there are special functions for translation, but I have seen this be treated by xarray separately.

> Continuous integration testing in PseudoNetCDF, at a minimum on TravicCI,, but Appveyor would be great too.

I added TravisCI, but haven't looked Appveyor.

> A conda-forge package to facilitate easy installs of PseudoNetCDF

I added a ci/requirements-py36-netcdf4-dev.yml as a part of my TravisCI integration. I am also working on a recipe (like https://github.com/conda-forge/xarray-feedstock).","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,296561316
https://github.com/pydata/xarray/pull/1905#issuecomment-365139584,https://api.github.com/repos/pydata/xarray/issues/1905,365139584,MDEyOklzc3VlQ29tbWVudDM2NTEzOTU4NA==,1191149,2018-02-13T03:24:49Z,2018-02-13T03:24:49Z,CONTRIBUTOR,"First, I too quickly tried to fast forward and clearly some test was failing. I have updated my code to pass all tests with py.test.

Before closing this request and opening another, I want to make sure I am clear one the extent of what I should add. I can create binary data from within python and then read it, but all those tests are in my software package. Duplicating that seems like a bad idea.

I have added a NetCDF3Only testcase to test_backends.py and it passes. That doesn't stress the multi-format capabilities of pnc, but as I've said all the numerical assertions for the other formats are in my system's test cases. Is the NetCDF3Only test sufficient in this case?

Further, below are some simple applications that download my test data for CAMx and GEOS-Chem and plot it.

Thanks for the input.

```
import xarray as xr
from urllib.request import urlretrieve


# CAMx test

urlretrieve('https://github.com/barronh/pseudonetcdf/blob/master/src/PseudoNetCDF/testcase/camxfiles/uamiv/test.uamiv?raw=true', 'test.uamiv')
xf = xr.open_dataset('test.uamiv', engine = 'pnc')
pm = xf.O3.isel(TSTEP = 0, LAY = 0).plot()
pm.axes.figure.savefig('test_camx.png')

pm.axes.figure.clf()

# GEOS-Chem Test

urlretrieve(""https://github.com/barronh/pseudonetcdf/blob/master/src/PseudoNetCDF/testcase/geoschemfiles/test.bpch?raw=true"", ""test.bpch"")
urlretrieve(""https://github.com/barronh/pseudonetcdf/blob/master/src/PseudoNetCDF/testcase/geoschemfiles/tracerinfo.dat?raw=true"", ""tracerinfo.dat"")
urlretrieve(""https://github.com/barronh/pseudonetcdf/blob/master/src/PseudoNetCDF/testcase/geoschemfiles/diaginfo.dat?raw=true"", ""diaginfo.dat"")
xf = xr.open_dataset('test.bpch', engine = 'pnc')
xa = getattr(xf, 'IJ-AVG-$_Ox')
xa2d = xa.isel(time = 0, layer3 = 0)
pm = xa2d.plot()
pm.axes.figure.savefig('test_bpch.png')
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,296561316
https://github.com/pydata/xarray/pull/1905#issuecomment-365099755,https://api.github.com/repos/pydata/xarray/issues/1905,365099755,MDEyOklzc3VlQ29tbWVudDM2NTA5OTc1NQ==,1191149,2018-02-12T23:32:42Z,2018-02-12T23:32:42Z,CONTRIBUTOR,"p.s., I just noticed my edits to whats-new.rst were not pushed until after my pull request.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,296561316
https://github.com/pydata/xarray/issues/470#issuecomment-304091977,https://api.github.com/repos/pydata/xarray/issues/470,304091977,MDEyOklzc3VlQ29tbWVudDMwNDA5MTk3Nw==,1191149,2017-05-25T18:49:29Z,2017-05-25T18:49:29Z,CONTRIBUTOR,"+1

Especially useful when using unstructured spatial datasets like observation stations.

```
import xarray as xr
nstations = 9
data = np.random.random(size = nstations)
longitude = np.random.random(size = nstations) + -90
latitude = np.random.random(size = nstations) + 40
da = xr.DataArray(np.random.random(nstations ), dims = ['station'], coords = dict(longitude = ('station', longitude), latitude = ('station', latitude))
da.scatter(x = 'longitude', y = 'latitude')
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,94787306