[Octave-bug-tracker] [bug #40892] Call to sigma function (control toolbox) causes a crash

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?40892>

                 Summary: Call to sigma function (control toolbox) causes a
crash
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Fri 13 Dec 2013 10:42:35 PM UTC
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Crash
                  Status: None
             Assigned to: None
         Originator Name: Saul Mtakula
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.6.4
        Operating System: Microsoft Windows

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Details:

Below is an example of a sensitivity function G formed using the script
attached. The sigma function crashes no matter what form the function call is.
Is there a workaround? Scilab/Matlab have no issue generating the plots.


clear
pkg load control
a=[-0.1164, -236.8, 153.3, 8.581, 38.94,  -74.04;
   13.28, 63.75, -47.21, -1.251, -9.194, 24.45;
    21.19,  212.5, -146.4, -6.629,-32.04, 72.11;
   1.764, -29.33,  22.07, 0.7402, 5.977,-9.715;
   -20.14,  219.7, -148.9,-5.633,-47.92, 72.86;
    -0.01975, 161.9, -107,-5.119, -30.03, 51.12];
 
  b=[-0.2017   -3.976
   0.4577    -3.77
   -0.3924   -2.023
   -0.4243   0.7527
   -0.1368   -1.959
    0.1489    1.218];
 
  c=[ -0.3336   0.08691  0.004088   -0.0117   0.09318    -0.656
     -1.293    0.4011     1.066   -0.2659    0.1607   -0.7863];
 
  d=[1   0;0   1];
  G=ss(a,b,c,d);
  
  [y,w]=sigma(G)




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