Covariance tab crashes

[hvasbath]

If the polygon mask is this large that it disables all the pixels that are being used for the covariance estimation. One needs to move the green box of covariance esitmation in advance.

One usually clicks the Mask before entering the Covariance tab.

Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/kite-1.4.0-py3.6-linux-x86_64.egg/kite/spool/spool.py", line 174, in buildViews
    self.addView(v)
  File "/usr/local/lib/python3.6/dist-packages/kite-1.4.0-py3.6-linux-x86_64.egg/kite/spool/spool.py", line 191, in addView
    view = view(self)
  File "/usr/local/lib/python3.6/dist-packages/kite-1.4.0-py3.6-linux-x86_64.egg/kite/spool/tab_covariance.py", line 61, in __init__
    self.param_covariance = KiteParamCovariance(model)
  File "/usr/local/lib/python3.6/dist-packages/kite-1.4.0-py3.6-linux-x86_64.egg/kite/spool/tab_covariance.py", line 791, in __init__
    **kwargs)
  File "/usr/local/lib/python3.6/dist-packages/kite-1.4.0-py3.6-linux-x86_64.egg/kite/spool/base.py", line 484, in __init__
    self.updateValues()
  File "/usr/local/lib/python3.6/dist-packages/kite-1.4.0-py3.6-linux-x86_64.egg/kite/spool/base.py", line 503, in updateValues
    value = getattr(model, param)
  File "/usr/local/lib/python3.6/dist-packages/kite-1.4.0-py3.6-linux-x86_64.egg/kite/covariance.py", line 1024, in covariance_model_rms
    cov, d = self.getCovariance()
  File "/usr/local/lib/python3.6/dist-packages/kite-1.4.0-py3.6-linux-x86_64.egg/kite/covariance.py", line 956, in getCovariance
    return self.covariance_spatial
  File "/usr/local/lib/python3.6/dist-packages/kite-1.4.0-py3.6-linux-x86_64.egg/kite/util/__init__.py", line 142, in cache_return
    instance.__dict__[var_name] = func(instance)
  File "/usr/local/lib/python3.6/dist-packages/kite-1.4.0-py3.6-linux-x86_64.egg/kite/covariance.py", line 906, in covariance_spatial
    noise_data = self.noise_data.ravel()
  File "/usr/local/lib/python3.6/dist-packages/kite-1.4.0-py3.6-linux-x86_64.egg/kite/covariance.py", line 297, in noise_data
    self.noise_data = self.scene.displacement[slice_N, slice_E]
  File "/usr/local/lib/python3.6/dist-packages/kite-1.4.0-py3.6-linux-x86_64.egg/kite/covariance.py", line 311, in noise_data
    data = derampMatrix(trimMatrix(data))
  File "/usr/local/lib/python3.6/dist-packages/kite-1.4.0-py3.6-linux-x86_64.egg/kite/util/__init__.py", line 99, in trimMatrix
    raise ValueError('Displacement is all NaN.')
ValueError: Displacement is all NaN.