OK, I sorted things out to a degree. To summarize, here's problematic things for me as a Windows user:
- When you clone from git and conda install ocw, and it leads to the confusing situation I was in where the example is using the old conda ocw package. - The example seems to depend on "proj4" but that's not installed as an ocw dependency. - matplotlib 2.2.2 mpl_toolkits/axes_grid1 has a bug where it won't produce an n*m grid of plots. This appears to be fixed in later versions [1]. Here's some suggested improvements: -- conda install ocw --only-deps -- conda install proj4 (* perhaps this should be an ocw dependency since the example seems to depend on it?) -- set PYTHONPATH to include the climate directory cloned from git I changed ocw/plotter.py:732 to pass ngrids=None to work around this problem in mpl_toolkits/axes_grid1 and I now have some beautiful plots of Africa. Updrading to matplotlib 3.0 unfortunately isn't a simple fix, apparently matplotlib.cbook removed is_scalar which mpl_toolkits.basemap depends on. I guess I'll follow up with matplotlib. [1] https://github.com/matplotlib/matplotlib/blob/98a0821b069ad75ad4b555ad15471dd6ffd14ae9/lib/mpl_toolkits/axes_grid1/axes_grid.py#L173 On Mon, Oct 8, 2018 at 11:58 AM Dominic Cooney <dominic.coo...@gmail.com> wrote: > Per the wiki's Getting Started page's [1] request, here's some trouble I > ran into as a Windows user getting started. > > First, it seems necessary to conda install proj4 in addition to ocw > (perhaps that should be a dependency?) otherwise mpl_toolkits.basemap can't > find epsg and this error results: > > C:\Users\coons\Documents\climate>python > examples\simple_model_to_model_bias.py > Traceback (most recent call last): > File "examples\simple_model_to_model_bias.py", line 53, in <module> > import ocw.data_source.local as local > File "C:\Program Files (x86)\Microsoft Visual > Studio\Shared\Anaconda3_64\lib\site-packages\ocw\data_source\local.py", > line 26, in <module> > from ocw.dataset import Dataset > File "C:\Program Files (x86)\Microsoft Visual > Studio\Shared\Anaconda3_64\lib\site-packages\ocw\dataset.py", line 34, in > <module> > import ocw.utils as utils > File "C:\Program Files (x86)\Microsoft Visual > Studio\Shared\Anaconda3_64\lib\site-packages\ocw\utils.py", line 26, in > <module> > from mpl_toolkits.basemap import shiftgrid, Basemap > File "C:\Program Files (x86)\Microsoft Visual > Studio\Shared\Anaconda3_64\lib\site-packages\mpl_toolkits\basemap\__init__.py", > line 146, in <module> > epsgf = open(os.path.join(pyproj.pyproj_datadir,'epsg')) > FileNotFoundError: [Errno 2] No such file or directory: 'epsg' > > Second, it seems axes_grid1/axes_grid.py has this curious condition: > > if ngrids is None: > ngrids = self._nrows * self._ncols > else: > if not 0 <= ngrids < self._nrows * self._ncols: > raise Exception > > This exception happens (see below); that comparison looks off-by-one > (ngrids <= self._nrows * self._ncols). > > I'd love to help out, is there a pointer to how to develop with some local > packages, eg a local fork of axes_grid1, instead of conda versions? Maybe > the sample just rotted a bit. Is there a unit test for the sample? > > Here's that exception stacktrace, FWIW: > > Generating a contour map using ocw.plotter.draw_contour_map() > Traceback (most recent call last): > File "simple_model_to_model_bias.py", line 164, in <module> > subtitles=sub_titles) > File "C:\Program Files (x86)\Microsoft Visual > Studio\Shared\Anaconda3_64\lib\site-packages\ocw\plotter.py", line 734, in > draw_contour_map > cbar_pad='0%' > File "C:\Program Files (x86)\Microsoft Visual > Studio\Shared\Anaconda3_64\lib\site-packages\mpl_toolkits\axes_grid1\axes_grid.py", > line 489, in __init__ > raise Exception > Exception > > All for now, > > dpc > > [1] https://cwiki.apache.org/confluence/display/CLIMATE/Getting+Started >
