octave-bug-tracker
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Octave-bug-tracker] [bug #48686] Copy of columns of the matrix


From: Polina
Subject: [Octave-bug-tracker] [bug #48686] Copy of columns of the matrix
Date: Wed, 3 Aug 2016 16:12:46 +0000 (UTC)
User-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.106 Safari/537.36

Follow-up Comment #2, bug #48686 (project octave):

Hello!

The problem doesn't lay in resizing. It stays when I change the for-loop:


N = 1e4;
M = 1e3;

flag  = 0;
flag1 = 0;

T = rand(M, N);

t1 = now();
for i=1:N-1
  if (flag == 0)
    T(:, i + 1) = T(:, i);
  else
    T(:, i + 1) = T(:, i) + flag1 * T(:, i);
  end
end
t2 = now();
datestr(t2 - t1, 'HH:MM:SS.FFF')


6 minutes instead of 1 second is anyhow too much.

    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?48686>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/




reply via email to

[Prev in Thread] Current Thread [Next in Thread]