Lowess baseline estimate raises FloatingPointError

[flip]

1. open the attached VIFF which is just press_cp0 w/a fitting tab
2. Click on the fitting tab
3. Click on initial values subtab
4. Under baseline estimate, choose Lowess. Immediately I get the error below.

Traceback (most recent call last):
 File "/Users/me/w/duke/src/vespa/analysis/src/tab_voigt.py", line 1255, in on_initial_baseline_method
   self.process_and_plot()
 File "/Users/me/w/duke/src/vespa/analysis/src/tab_voigt.py", line 2008, in process_and_plot
   self.process(entry=entry)
 File "/Users/me/w/duke/src/vespa/analysis/src/tab_voigt.py", line 1965, in process
   self.block.chain.run(voxel=voxel, entry=entry, statusbar=self.top.statusbar)
 File "/Users/me/w/duke/src/vespa/analysis/src/chain_voigt.py", line 353, in run
   funct.algorithm(self)
 File "/Users/me/w/duke/src/vespa/analysis/src/functors/funct_initial_values.py", line 167, in algorithm
   util_inital_values.find_initial_values(chain.data, chain)
 File "/Users/me/w/duke/src/vespa/analysis/src/util_initial_values.py", line 2515, in find_initial_values
   initvals_1h_lowfield_shortte(data, chain)
 File "/Users/me/w/duke/src/vespa/analysis/src/util_initial_values.py", line 1848, in initvals_1h_lowfield_shortte
   ddat = inital_estimate_baseline(ddat, proc)
 File "/Users/me/w/duke/src/vespa/analysis/src/util_initial_values.py", line 1186, in inital_estimate_baseline
   base1 = baseline_estimation_lowess(dat.real, proc, widmul=1.0)
 File "/Users/me/w/duke/src/vespa/analysis/src/util_initial_values.py", line 640, in baseline_estimation_lowess
   ms  = np.median(dat[lhs1:lhs])
 File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/lib/function_base.py", line 2955, in median
   return mean(sorted[indexer], axis=axis, out=out)
 File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/core/fromnumeric.py", line 2374, in mean
   return mean(axis, dtype, out)
FloatingPointError: invalid value encountered in double_scalars

[bsoher]

fixed in r3256, units for an input array for lowess baseline estimation had changed elsewhere in the code resulting in an empty array that crashed np.median().

[flip]

Fix confirmed, closing