FIX:

forgi86 · forgi86 · commit caa3e2c8a755 · 2021-03-31T21:51:12.000+02:00
- result of singular_values_plot transposed to be in line with the "channel first" format
- tests also updated consequently
diff --git a/control/freqplot.py b/control/freqplot.py
@@ -1172,7 +1172,7 @@ def singular_values_plot(syslist, omega=None,
         fresp = fresp.transpose((2, 0, 1))
         sigma = np.linalg.svd(fresp, compute_uv=False)
 
-        sigmas.append(sigma)
+        sigmas.append(sigma.transpose())  # return shape is "channel first"
         omegas.append(omega_sys)
         nyquistfrqs.append(nyquistfrq)
 
diff --git a/control/tests/freqresp_test.py b/control/tests/freqresp_test.py
@@ -532,7 +532,7 @@ def ss_mimo_t():
     D = np.zeros((2, 2))
     T = TSys(ss(A, B, C, D))
     T.omega = 0.0
-    T.sigma = np.array([[197.20868123, 1.39141948]])
+    T.sigma = np.array([[197.20868123], [1.39141948]])
     return T
 
 
