Better not use unwrap in phase plots.

applications/lofar2/model/rtdsp/plotting.py

@@ -146,7 +146,8 @@ def plot_spectra(fn, HF, fs=1.0, fLim=None, dbLim=None, aLim=None):
     . fs: sample frequency in Hz
     """
     Hmag = np.abs(HF)
-    Hphs = np.unwrap(np.angle(HF))
+    # Hphs = np.unwrap(np.angle(HF))
+    Hphs = np.angle(HF)
     Hpow_dB = pow_db(HF)  # power response
     f = fn * fs  # scale fn by fs
     flabel = 'Frequency [fs = %f]' % fs
@@ -209,7 +210,9 @@ def plot_phase_spectrum(fn, HF, fmt='r', fs=1.0, fLim=None, aLim=None):
     f = fn * fs  # scale fn by fs
     flabel = 'Frequency [fs = %f]' % fs
 
-    plt.plot(f, np.unwrap(np.angle(HF)), fmt)
+    # Hphs = np.unwrap(np.angle(HF))
+    Hphs = np.angle(HF)
+    plt.plot(f, Hphs, fmt)
     plt.title('Phase spectrum')
     plt.ylabel('Pase [rad]')
     plt.xlabel(flabel)