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Keyword arguments to Proj() are silently ignored when projparams are specified

See original GitHub issue

I came across this when trying to initialize a Proj() and include geoidgrids:

proj = pyproj.Proj('EPSG:3162', geoidgrids='CGG2013an83.gtx')
proj.crs.is_vertical
>>> False

This is confusing. Why is it not taking my geoidgrids? Did I get the file name/path wrong?

Turns out the positional argument projparams is mutually exclusive with any passed **kwargs:

https://github.com/pyproj4/pyproj/blob/632c39818e77f8226bbec0db2a3fbe7fc02f7d33/pyproj/proj.py#L143

Yet there is no indication that this is not a valid way to initialize it.

In my opinion it should throw an exception, and it could perhaps be made clearer in the documentation as well. It’s a minor user experience thing, but still something I had to spend time troubleshooting. Happy to attempt a PR if others agree.

(stackexchange thread that spawned this)

Issue Analytics

State:
Created 4 years ago
Comments:6 (6 by maintainers)

Top GitHub Comments

1reaction

snowman2commented, Mar 9, 2020

Looks good. Mind adding a test for the CRS class as well?

0reactions

gberardinellicommented, Mar 9, 2020

I gave it a shot but I’m not really sure what I’m doing at this point, feels a bit kludgey. Tests in test_proj all pass…

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