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[Octave-bug-tracker] [bug #45336] control 2.8.2 - error on MIMO tf multi
From: |
Nick Jankowski |
Subject: |
[Octave-bug-tracker] [bug #45336] control 2.8.2 - error on MIMO tf multiply |
Date: |
Wed, 17 Jun 2015 02:38:24 +0000 |
User-agent: |
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0 |
URL:
<http://savannah.gnu.org/bugs/?45336>
Summary: control 2.8.2 - error on MIMO tf multiply
Project: GNU Octave
Submitted by: nrjank
Submitted on: Wed 17 Jun 2015 02:38:23 AM GMT
Category: Octave Forge Package
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Incorrect Result
Status: None
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: 4.0.0
Operating System: Microsoft Windows
_______________________________________________________
Details:
after upgrading to 2.8.2, a script that worked under 2.8.1 started throwing an
error. here's a simpler version that produces the same error:
>> a1 = tf({[2 24],[12];[1 48 0],[2 24]},{[-1 24],[-1 24];[-4 96],[-1 24]});
>> a1**2;
warning: tf: converting to minimal state-space for MIMO TF interconnections
warning: called from
__sys_connect__ at line 115 column 5
mtimes at line 58 column 7
mpower at line 56 column 12
>> a1**3;
warning: tf: converting to minimal state-space for MIMO TF interconnections
warning: called from
__sys_connect__ at line 115 column 5
mtimes at line 58 column 7
mpower at line 56 column 12
warning: tf: converting to minimal state-space for MIMO TF interconnections
>> a1**4;
warning: tf: converting to minimal state-space for MIMO TF interconnections
warning: called from
__sys_connect__ at line 115 column 5
mtimes at line 58 column 7
mpower at line 56 column 12
warning: tf: converting to minimal state-space for MIMO TF interconnections
warning: tf: converting to minimal state-space for MIMO TF interconnections
error: subscript indices must be either positive integers less than 2^31 or
logicals
error: called from
__sys2ss__> at line -1 column -1
__sys2ss__ at line 50 column 10
ss at line 175 column 17
__sys_connect__ at line 116 column 9
mtimes at line 58 column 7
mpower at line 56 column 12
error: evaluating argument list element number 1
error: called from
__sys_connect__ at line 116 column 9
mtimes at line 58 column 7
mpower at line 56 column 12
error: evaluating argument list element number 1
error: called from
__sys_connect__ at line 116 column 9
mtimes at line 58 column 7
mpower at line 56 column 12
don't know if this is related to Bug #45334, which relates to odd outputs from
multiple tf multiplies. But this error above is new to 2.8.2, and the case
described in #45334 does not create this error in 2.8.1 or 2.8.2.
_______________________________________________________
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<http://savannah.gnu.org/bugs/?45336>
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- [Octave-bug-tracker] [bug #45336] control 2.8.2 - error on MIMO tf multiply,
Nick Jankowski <=