fft: Remove conflicting definition of assymetric

Now:
    Symmetric (Michelson-type) interferometer
      a. Fully symmetric interferogram
      b. Truncated symmetric interferogram ("Asymmetric" in some software)
    Asymmetric (s-SNOM type) interferometer

Author: stuart-cls

orangecontrib/spectroscopy/tests/test_irfft.py

@@ -22,10 +22,10 @@ def setUp(self):
         self.ifgs = {
             'even_sym': self.ifg_single.X[0],
             'odd_sym': self.ifg_single.X[0][1:],
-            'even_asym': self.ifg_seq_ref.X[0][1:],
-            'odd_asym': self.ifg_seq_ref.X[0],
-            'even_asym_reverse': self.ifg_seq_ref.X[0][1:][::-1],
-            'odd_asym_reverse': self.ifg_seq_ref.X[0][::-1],
+            'even_trunc': self.ifg_seq_ref.X[0][1:],
+            'odd_trunc': self.ifg_seq_ref.X[0],
+            'even_trunc_reverse': self.ifg_seq_ref.X[0][1:][::-1],
+            'odd_trunc_reverse': self.ifg_seq_ref.X[0][::-1],
         }
 
     def test_zero_fill(self):
@@ -161,10 +161,10 @@ def test_apodization(self):
                     self.assertAlmostEqual(ifg[zpd], out[zpd])
 
     def test_ramp(self):
-        ifg = self.ifgs['odd_asym']
+        ifg = self.ifgs['odd_trunc']
         zpd = find_zpd(ifg, PeakSearch.ABSOLUTE)
         ramp_fwd = ramp(ifg, zpd)
-        ifg_rev = self.ifgs['odd_asym_reverse']
+        ifg_rev = self.ifgs['odd_trunc_reverse']
         zpd_rev = find_zpd(ifg_rev, PeakSearch.ABSOLUTE)
         ramp_rev = ramp(ifg_rev, zpd_rev)
         np.testing.assert_array_equal(ramp_fwd, ramp_rev[::-1])

orangecontrib/spectroscopy/widgets/owfft.py

@@ -613,10 +613,10 @@ def determine_sweeps(self):
                 zpd2 = irfft.find_zpd(data[1][::-1], self.peak_search)
                 # Forward / backward zpds never perfectly match
                 if zpd1 >= zpd2 - var and zpd1 <= zpd2 + var:
-                    # forward-backward, symmetric and asymmetric
+                    # forward-backward, symmetric and truncated symmetric
                     sweeps = 1
                 else:
-                    # single, asymetric
+                    # single, truncated symetric
                     sweeps = 0
         # Honour custom sweeps setting
         if self.auto_sweeps: