Re: is_real_matrix()

[Søren Hauberg]

Thanks to the both of you for the quick answer.

/Søren

lør, 01 10 2005 kl. 17:59 +0200, skrev David Bateman:
> Søren Hauberg a écrit :
> 
> >Hi,
> >In C++ (using 2.9.3), I've been using the 'is_real_matrix' function, but
> >don't get the results I expect. This code:
> >
> >if (args.length() != 1 || !args(0).is_real_matrix()) {
> >    error("Input argument must be real matrix\n");
> >    return ret;
> >}
> >Matrix Dkm1 = args(0).matrix_value();
> >
> >doesn't return an error if args(0) is a string. It does however give me
> >this error:
> >
> >  
> >
> The string class has the matrix_value() function and so can be converted 
> to a real matrix, it is therefore normal that it returns true for the 
> test for real matrices... You should test if its a string first, or use 
> something like
> 
> if (args.length() != 1 || args(0).type_name() != "matrix")
> 
> which will positively identify the type by it name as it appears in the 
> "typeinfo" or "whos" command from the prompt..
> 
> Cheers
> David
> 
> >error: invalid conversion from string to real matrix
> >
> >So how do I check if an input argument is a real matrix?
> >
> >/Søren
> >
> >
> >
> >-------------------------------------------------------------
> >Octave is freely available under the terms of the GNU GPL.
> >
> >Octave's home on the web:  http://www.octave.org
> >How to fund new projects:  http://www.octave.org/funding.html
> >Subscription information:  http://www.octave.org/archive.html
> >-------------------------------------------------------------
> >  
> >
> 



-------------------------------------------------------------
Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.octave.org
How to fund new projects:  http://www.octave.org/funding.html
Subscription information:  http://www.octave.org/archive.html
-------------------------------------------------------------