extracting rows in a matrix

[Carlo Rossi]

hello,

 what about this warning please (in matlab)?

   tmp = A0(randperm (size(A0, 1)), :);
   TT0 = tmp(1:size(A0, 1)/10, :);

Warning: Integer operands are required for colon operator when used as index


--- Mer 13/5/09, John W. Eaton <jwe at octave.org> ha scritto:

Da: John W. Eaton <jwe at octave.org>
Oggetto: Re: extracting rows in a matrix
A: "Carlo Rossi" <serosole at yahoo.it>
Cc: "Ben Abbott" <bpabbott at mac.com>, help-octave at octave.org
Data: Mercoledì 13 maggio 2009, 15:27

On 13-May-2009, Carlo Rossi wrote:

| this is very cool but actually I need to write something that is good
| for Matlab too; and I notice only now that it doens't work in Matlab

| B = A(randperm (size (A, 1)), :)(1:size (A, 1)/5, :);

Then write it like this:

  tmp = A(randperm (size (A, 1)), :);
  B = tmp(1:size (A, 1)/5, :);

jwe



      
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://www-old.cae.wisc.edu/pipermail/help-octave/attachments/20090513/bc0fedfe/attachment-0001.html