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Re: matlab nargin() function alternative in octave?
From: |
Sharene Bungay |
Subject: |
Re: matlab nargin() function alternative in octave? |
Date: |
Tue, 20 Jan 2004 10:04:44 -0500 (EST) |
Hi, thanks for your reply.
I believe it can only accept string arguments under matlab.
An example is as follows: Lets assume that I define
an algorithm that uses regression as one of its steps.
I code the algorithm to call reg(x1,x2,...) with the
correct number of arguments. reg() in turn is conditionally
defined to take either say, 2 or 3 arguments, depending
on some user-set parameter. I could then have my algorithm
test something like:
if (nargin('reg')==3)
sigma=0.001;
reg(x1,x2,sigma);
else
reg(x1,x2);
end
Now if I were coding this, I would probably just have a global
flag something like:
if (userselect==reg1)
regfunc1(x1,x2,sigma);
else
regfunc2(x1,x2);
end
But unfortunately, I need to use existing code that makes
use of the nargin('string') functionality.
TIA.
Sharene.
On Mon, 19 Jan 2004, John W. Eaton wrote:
> On 19-Jan-2004, Sharene Deanne Bungay <address@hidden> wrote:
>
> | I have some matlab code that I would very much like
> | to use under octave. Unfortunately, the matlab code
> | relies on matlab's ability to pass a function as an
> | argument to nargin ( eg. nargin('sin')) and have it return
> | the number of arguments expected by that function.
> | I know that under octave, nargin is only a local scope scalar
> | valid inside a given function, but does there exist a means
> | under octave to get the number of expected arguments to a function
> | (outside the scope of that function)?
> |
> | (This functionality is required since I have functions that are
> | conditionally defined to take different arguments, and subsequent
> | behaviour requires knowledge of the number of arguments. Rewriting
> | the code to use global variables instead of relying on the form of
> | the function definitions would be too extensive, so any help
> | on this matter would be *GREATLY* appreciated.)
>
> Can you post an actual example that uses this functionality so we can
> see how you are using it and why it is needed?
>
> The Matlab documentation shows that nargin and nargout may accept
> string arguments. Are function handles also allowed?
>
> Thanks,
>
> jwe
>
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- matlab nargin() function alternative in octave?, Sharene Deanne Bungay, 2004/01/19
- matlab nargin() function alternative in octave?, John W. Eaton, 2004/01/19
- Re: matlab nargin() function alternative in octave?,
Sharene Bungay <=
- Re: matlab nargin() function alternative in octave?, taltman, 2004/01/20
- Re: matlab nargin() function alternative in octave?, Sharene Deanne Bungay, 2004/01/20
- Re: matlab nargin() function alternative in octave?, taltman, 2004/01/20
- Re: matlab nargin() function alternative in octave?, John W. Eaton, 2004/01/20
- Re: matlab nargin() function alternative in octave?, taltman, 2004/01/20
- Re: matlab nargin() function alternative in octave?, John W. Eaton, 2004/01/20
- Re: matlab nargin() function alternative in octave?, Sharene Deanne Bungay, 2004/01/21
- Re: matlab nargin() function alternative in octave?, John W. Eaton, 2004/01/21
- Re: matlab nargin() function alternative in octave?, Sharene Deanne Bungay, 2004/01/21
- Re: matlab nargin() function alternative in octave?, taltman, 2004/01/21