From help-octave-request at bevo dot che dot wisc dot edu  Tue Apr 24 08:41:41 2001
Subject: Re: replacing NaN
From: Paul Kienzle <pkienzle at kienzle dot powernet dot co dot uk>
To: david barnes <d dot d dot barnes at ic dot ac dot uk>
Cc: kai dot habel at gmx dot de, help-octave@bevo.che.wisc.edu
Date: Tue, 24 Apr 2001 14:41:30 +0100

The single index problem can be solved by moving to the most
recent release of octave.

If that is too much trouble, you can just do:
	do_fortran_indexing = 1;

In a library function, you should wrap the do_fortran_indexing 
in an unwind_protect:

	dfi = do_fortran_indexing;
	unwind_protect
	   do_fortran_indexing = 1;
	   ...
	unwind_protect_cleanup
	   do_fortran_indexing = dfi;
	end_unwind_protect

I am very happy that this is no longer needed.

Paul Kienzle
pkienzle at kienzle dot powernet dot co dot uk

On Tue, Apr 24, 2001 at 02:13:00PM +0100, david barnes wrote:
> 
> Hi Kai!
> 
> Kai Habel wrote:
> 
> > 
> > M = [2 3;NaN 4]
> > 
> > M(isnan(M)) = 0.0
> 
> I got that far,
> but 2 things
> you'll get
>    "error: single index only valid for row or column vector"
> and note
>    NaN * notNaN = NaN
> and I can't see
>    [i,j] = find(isnan(M))
> helping much more
> so I've gone for:
>    line = strrep(line,'NaN','0.0');
> 
> but thanks anyway ...
> David
> 
> -- 
> David DS Barnes 
> MED | Imperial College | Exhibition Rd | London sw7 2bx
> t/f:0207 594 7181/7127
> 
> tap vein, mine deep, share gold
> 
> 
> 
> 
> 
> 
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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
Subscription information:  http://www.octave.org/archive.html
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