From help-octave-request at bevo dot che dot wisc dot edu  Tue Oct  3 17:38:01 1995
Subject: Error messages
From: John Eaton <jwe at bevo dot che dot wisc dot edu>
To: salehh <root at peak dot org>
Cc: help-octave at bevo dot che dot wisc dot edu
Date: Tue, 3 Oct 1995 17:38:00 -0500

root at peak dot org <root@peak.org> wrote:

: I can't make sense of the following error messages I am getting from
: octave. All of "lb1, lb2, ub1, ub2, x0" are 7 x 1 column vectors
: and a is a 7 x 7 square matrix.
: 
: octave:1> test2
: 
: error: invalid conversion from real matrix to string
: error: npsol: bounds for linear constraints must be vectors
: error: evaluating index expression near line 24, column 27
: error: evaluating assignment expression near line 24, column 25

Please try the following patch.  I think it should fix your problem.

Thanks,

jwe


Tue Oct  3 05:30:24 1995  John Eaton  <jwe at bevo dot che dot wisc dot edu>

	* variables.cc (is_valid_function): Avoid setting error_state if
	argument is not a string and warn is 0.


*** src/variables.cc~	Fri Feb 17 09:31:07 1995
--- src/variables.cc	Tue Oct  3 17:33:16 1995
***************
*** 134,142 ****
  {
    tree_fvc *ans = 0;
  
!   char *fcn_name = arg.string_value ();
  
!   if (error_state)
      {
        if (warn)
  	error ("%s: expecting function name as argument", warn_for);
--- 134,144 ----
  {
    tree_fvc *ans = 0;
  
!   char *fcn_name = 0;
!   if (arg.is_string ())
!     fcn_name = arg.string_value ();
  
!   if (! fcn_name || error_state)
      {
        if (warn)
  	error ("%s: expecting function name as argument", warn_for);