From help-request at octave dot org Tue Dec 14 20:00:02 2004
Subject: Re: Question re function in .m file
From: Paul Kienzle <pkienzle at users dot sourceforge dot net>
To: "John B. Thoo" <jb2 at ms dot yuba dot cc dot ca dot us>
Cc: octave help mailing list <help at octave dot org>
Date: Tue, 14 Dec 2004 21:01:24 -0500

These are expected errors.

When you type the function f directly into octave it
defines the function f.  When you put it into quaderror.m
it defines the function quaderror.m, which when loaded finds
that it is named f and warns you.

The x undefined error is because you didn't use
quaderror(x), but instead called it without any
arguments.  If you said 'f' on the command line
after defining f directly on the command line you
would have seen a similar error.

- Paul

On Dec 14, 2004, at 6:44 PM, John B. Thoo wrote:

> Hi.  I apologize if this is a FAQ.  I put the following in a file I  
> named "quaderror.m".
>
> function y = f(x)
> y = (cos (x) - 0.5 * (sin (x)).^2 - (cos (x)).^2).^2;
> endfunction
>
> But when I type "quaderror" in Octave, I get this:
>
> octave:9> quaderror
> warning: near line 9, column 1:
>
> >>> quaderror
>
>
> warning: function name `f' does not agree with function file name  
> `/Users/jbthoo/Documents/Work/CompletedWork/Reviews/ 
> PRIMUSreview200412/quaderror.m'
> error: `x' undefined near line 2 column 11
> error: evaluating argument list element number 1
> error: evaluating binary operator `-' near line 2, column 14
> error: evaluating binary operator `-' near line 2, column 35
> error: evaluating binary operator `.^' near line 2, column 50
> error: evaluating assignment expression near line 2, column 3
> error: called from `quaderror' in file  
> `/Users/jbthoo/Documents/Work/CompletedWork/Reviews/ 
> PRIMUSreview200412/quaderror.m'
>
> I don't understand the error messages.  When I type the function  
> directly in Octave, I do not get an error.  What am I missing?
>
> TIA.
> ---John.
>
>
>
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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
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