From bug-request at octave dot org Thu Dec  1 14:39:52 2005
Subject: rows and columns (functions)
From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
To: William Poetra Yoga H <williampoetra at yahoo dot com>
Cc: bug at octave dot org
Date: Thu, 1 Dec 2005 15:39:45 -0500

On 12-Nov-2005, William Poetra Yoga H wrote:

| I find that rows() and columns() are a bit slow, so I saw how it's done:
| 
|   [nr, nc] = size (x);
| 
| I found that this is about 20% faster:
| 
|   nr = size(x,1);
| 
| And:
| 
|   nc = size(x,2);
| 
| So why not use these instead?

Probably because rows and columns were written before Octave's size
command (or even Matlab's) accepted a DIM argument.

| Even better, making them built-in functions would
| speed up the whole thing, I think.

Show me the code.  :-)

jwe



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