remove dtype from _ssmatrix conversion.

bnavigator · bnavigator · commit b65b719e17c5 · 2020-07-29T18:10:41.000+02:00
It is not necessary to enforce float and can raise ComplexWarning during casting; cf. #376
diff --git a/control/statesp.py b/control/statesp.py
@@ -98,11 +98,11 @@ def _ssmatrix(data, axis=1):
     # Convert the data into an array or matrix, as configured
     # If data is passed as a string, use (deprecated?) matrix constructor
     if config.defaults['statesp.use_numpy_matrix']:
-        arr = np.matrix(data, dtype=float)
+        arr = np.matrix(data)
     elif isinstance(data, str):
-        arr = np.array(np.matrix(data, dtype=float))
+        arr = np.array(np.matrix(data))
     else:
-        arr = np.array(data, dtype=float)
+        arr = np.array(data)
     ndim = arr.ndim
     shape = arr.shape
 
