Error creating plots in plotpfl

[glwagner]

When attempting to execute /cases/OCSPapa/case_run, plotpfl throws the error:

Traceback (most recent call last):
  File "/Users/gregorywagner/Projects/gotm/gotmwork/tools/plotpfl", line 275, in <module>
    main()
  File "/Users/gregorywagner/Projects/gotm/gotmwork/tools/plotpfl", line 112, in main
    im = plt.contourf(dttime, z, np.transpose(mdl), levels, extend='both')
  File "/anaconda3/lib/python3.6/site-packages/matplotlib/pyplot.py", line 2818, in contourf
    ret = ax.contourf(*args, **kwargs)
  File "/anaconda3/lib/python3.6/site-packages/matplotlib/__init__.py", line 1717, in inner
    return func(ax, *args, **kwargs)
  File "/anaconda3/lib/python3.6/site-packages/matplotlib/axes/_axes.py", line 5827, in contourf
    contours = mcontour.QuadContourSet(self, *args, **kwargs)
  File "/anaconda3/lib/python3.6/site-packages/matplotlib/contour.py", line 853, in __init__
    kwargs = self._process_args(*args, **kwargs)
  File "/anaconda3/lib/python3.6/site-packages/matplotlib/contour.py", line 1447, in _process_args
    x, y, z = self._contour_args(args, kwargs)
  File "/anaconda3/lib/python3.6/site-packages/matplotlib/contour.py", line 1528, in _contour_args
    x, y, z = self._check_xyz(args[:3], kwargs)
  File "/anaconda3/lib/python3.6/site-packages/matplotlib/contour.py", line 1557, in _check_xyz
    x = np.asarray(x, dtype=np.float64)
  File "/anaconda3/lib/python3.6/site-packages/numpy/core/numeric.py", line 492, in asarray
    return array(a, dtype, copy=False, order=order)
TypeError: float() argument must be a string or a number, not 'real_datetime'

[glwagner]

It seems this particular error can be alleviated by converting dttime from a real_datetime object into an ordinary python datetime object via:

dttime = np.array(
        [datetime.datetime(t.year, t.month, t.day, t.hour, t.minute, t.second, t.microsecond) 
            for t in dttime]
    )

below this line:

gotmwork/tools/gotmtool.py

Line 118 in f43abf9

dttime = nctime_to_datetime(nctime, tidx_start=tidx_start, tidx_end=tidx_end+1)

See the change here:

https://github.com/glwagner/gotmwork/blob/b830d1f6b0a6bbd24e6e00408017fdfb4b74429f/tools/gotmtool.py#L120

I still don't get a plot showing up though, and I can't find it (if it was saved anywhere).

[qingli411]

@glwagner I noticed this error when upgrading to matplotlib 3. matplotlib 2.2.2 works fine. I'm going to fix it. For now, there are two workaround:

1. You can simply comment out the last line of /case/OCSPapa/case_run, which does the plotting.
2. You can copy my Conda environment using gotm_env.yml in the develop branch. All the tools should work fine in this environment.

[glwagner]

Awesome, thank you.