[python-control-discuss] SF.net SVN: python-control:[108] branches/control-0.4a/src/statesp.py

[<kk...@us...>]

Revision: 108
          http://python-control.svn.sourceforge.net/python-control/?rev=108&view=rev
Author:   kkchen
Date:     2011-02-08 22:18:35 +0000 (Tue, 08 Feb 2011)

Log Message:
-----------
Bug fix in StateSpace._remove_useless_states.

Kevin K. Chen <kk...@pr...>

Modified Paths:
--------------
    branches/control-0.4a/src/statesp.py

Modified: branches/control-0.4a/src/statesp.py
===================================================================
--- branches/control-0.4a/src/statesp.py	2011-02-08 22:18:31 UTC (rev 107)
+++ branches/control-0.4a/src/statesp.py	2011-02-08 22:18:35 UTC (rev 108)
@@ -157,7 +157,7 @@
         # Remove the useless states.
         if all(useless == range(self.states)):
             # All the states were useless.
-            self.A = 0
+            self.A = zeros((1, 1))
             self.B = zeros((1, self.inputs))
             self.C = zeros((self.outputs, 1))
         else:
@@ -167,6 +167,10 @@
             self.B = delete(self.B, useless, 0)
             self.C = delete(self.C, useless, 1)
 
+        self.states = self.A.shape[0]
+        self.inputs = self.B.shape[1]
+        self.outputs = self.C.shape[0]
+
     def copy(self):
         """Return a deep copy of the instance."""
 


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