Iris cannot find UDUNITS on Windows

[ocefpaf]

I am puzzled that this is happening again:

OSError: [UT_OPEN_ARG] Failed to open UDUNITS-2 XML unit database : "No such file or directory"

That happens in both the ioos and scitools versions of iris. I am not sure what is going on. Maybe my WindowsVM is broken. So I appreciate if someone else can test this and let me know if the package is working for them.

NB: I can see the site.cfg. It seems to be correctly created and is pointing to the right place to find the UDUNITS-2 DLL.

[rsignell-usgs]

Is this a sufficient test?
conda install iris
and then
import iris

[ocefpaf]

I need to know if it is a clean environment in case you already have iris installed. A conda info and conda list output would help.

[ocefpaf]

OK I can confirm that this only happens when starting Python from another hard disk letter. This is a Windows idiosyncrasy that I have no idea how to solve! Closing this.

[ocefpaf]

A workaround it is to load iris first and then switch directories using the os module.

import iris
import os
os.chdir('E:')

(See http://nbviewer.ipython.org/gist/ocefpaf/6b4fb5f5a019c0af0a08)

[rsignell-usgs]

Interesting. I imagine this windows workaround is likely useful in other situations as well.

[ocefpaf]

Probably.

PS: To be honest I am very frustrate with that solution. There must be an easier and more "Windows natural way" to solve this.

[pelson]

I think this is a bug we need to fix so I'll re-open. Hopefully it will be a simple one...

[ghost]

Yeah this is biting me too. A couple of things I noticed (win64 anaconda),

first my xml database is not in the path provided by:

        _alt_xml_path = os.path.join(sys.prefix, 'share',
                                         'udunits', 'udunits2.xml')

I had to add 'Library' before 'share':

        _alt_xml_path = os.path.join(sys.prefix, 'Library', 'share',
                                         'udunits', 'udunits2.xml')

The second even resolving to the right directory didn't work. This might be too 'hacky' for cf_units but It would be possible to add the working directory switch directly to the init.py so windows users could continue to use this install without grief. This works for me:

[pelson]

Closed due to the deprecation of this repo. #250