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Re: is_real_matrix()
From: |
Søren Hauberg |
Subject: |
Re: is_real_matrix() |
Date: |
Sun, 02 Oct 2005 10:34:25 +0200 |
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
> >
> >
> >
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