Peddy error - RuntimeWarning

[evagradovich]

Hi, I am getting an error:

  bot = depth[depth > bot].mean() - 5 * depth[depth > bot].std()
/home/evag/.local/lib/python3.6/site-packages/numpy/core/_methods.py:140: RuntimeWarning: Degrees of freedom <= 0 for slice
  keepdims=keepdims)
Traceback (most recent call last):
  File "/data/scratch/user/evag/env-precisionhealth/bin/peddy", line 11, in <module>
    sys.exit(cli())
  File "/data/scratch/user/evag/env-precisionhealth/lib/python3.6/site-packages/click/core.py", line 716, in __call__
    return self.main(*args, **kwargs)
  File "/data/scratch/user/evag/env-precisionhealth/lib/python3.6/site-packages/click/core.py", line 696, in main
    rv = self.invoke(ctx)
  File "/data/scratch/user/evag/env-precisionhealth/lib/python3.6/site-packages/click/core.py", line 889, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/data/scratch/user/evag/env-precisionhealth/lib/python3.6/site-packages/click/core.py", line 534, in invoke
    return callback(*args, **kwargs)
  File "/data/scratch/user/evag/env-precisionhealth/lib/python3.6/site-packages/peddy/cli.py", line 209, in peddy
    in ("ped_check", "het_check", "sex_check")]):
  File "/data/scratch/user/evag/env-precisionhealth/lib/python3.6/site-packages/peddy/cli.py", line 43, in run
    prefix=prefix, **kwargs)
  File "/data/scratch/user/evag/env-precisionhealth/lib/python3.6/site-packages/peddy/peddy.py", line 930, in het_check
    plt.scatter(depth, ratios, c=cs, edgecolors=ecs, s=s)
  File "/data/scratch/user/evag/env-precisionhealth/lib/python3.6/site-packages/matplotlib/pyplot.py", line 2841, in scatter
    None else {}), **kwargs)
  File "/data/scratch/user/evag/env-precisionhealth/lib/python3.6/site-packages/matplotlib/__init__.py", line 1589, in inner
    return func(ax, *map(sanitize_sequence, args), **kwargs)
  File "/data/scratch/user/evag/env-precisionhealth/lib/python3.6/site-packages/matplotlib/axes/_axes.py", line 4490, in scatter
    alpha=alpha

  File "/data/scratch/user/evag/env-precisionhealth/lib/python3.6/site-packages/matplotlib/collections.py", line 883, in __init__
    Collection.__init__(self, **kwargs)
  File "/data/scratch/user/evag/env-precisionhealth/lib/python3.6/site-packages/matplotlib/collections.py", line 128, in __init__
    self.set_edgecolor(edgecolors)
  File "/data/scratch/user/evag/env-precisionhealth/lib/python3.6/site-packages/matplotlib/collections.py", line 728, in set_edgecolor
    self._set_edgecolor(c)
  File "/data/scratch/user/evag/env-precisionhealth/lib/python3.6/site-packages/matplotlib/collections.py", line 712, in _set_edgecolor
    self._edgecolors = mcolors.to_rgba_array(c, self._alpha)
  File "/data/scratch/user/evag/env-precisionhealth/lib/python3.6/site-packages/matplotlib/colors.py", line 286, in to_rgba_array
    result[i] = to_rgba(cc, alpha)
  File "/data/scratch/user/evag/env-precisionhealth/lib/python3.6/site-packages/matplotlib/colors.py", line 177, in to_rgba
    rgba = _to_rgba_no_colorcycle(c, alpha)
  File "/data/scratch/user/evag/env-precisionhealth/lib/python3.6/site-packages/matplotlib/colors.py", line 238, in _to_rgba_no_colorcycle
    raise ValueError("Invalid RGBA argument: {!r}".format(orig_c))
ValueError: Invalid RGBA argument: masked```

Suppressing the warning seems to cause issues downstream.