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Re: indexed images


From: Søren Hauberg
Subject: Re: indexed images
Date: Sun, 27 Mar 2005 20:05:58 +0200
User-agent: Mozilla Thunderbird 1.0 (X11/20050111)

I guess that means I must have an error in my installation. I'm using octave 2.1.64 that comes with Ubuntu Linux.

So I guess I'll just have to start debugging :-(

/Søren

Robert A. Macy skrev:
Right, I keep forgetting how forgiving octave is.

However, the sequence works on my machine with no error
statements.  - running binary octave 2.1.50a-inst.exe on
Win98

                 - Robert -

On Sat, 26 Mar 2005 16:07:00 +0100
 Søren Hauberg <address@hidden> wrote:

Hi
It wasn't a typo, but from what I understand the comma
isn't necesary. The problem is related to the call to
ind2gray.

Thanks,
Søren

Macy skrev:

May just be a typo on your email, but you have no

comma..

   [indexed map] = gray2ind(I);

should be..
   [indexed, map] = gray2ind(I);

      - Robert -

On Sat, 26 Mar 2005 15:15:58 +0100
Søren Hauberg <address@hidden> wrote:


Hi
Shouldn't I be able to do the following? ('I' as

512x512

image)

 [indexed map] = gray2ind(I);
 G = ind2gray(indexed, map);

If I do the above I get this error:

error: invalid vector index = 15436
error: evaluating argument list element number 1
error: evaluating assignment expression near line 49,
column 5
error: called from `ind2gray' in file
`/usr/share/octave/2.1.64/m/image/ind2gray.m'
error: evaluating assignment expression near line 48,
column 3

But perhaps I'm misunderstanding the functions?

/Søren





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