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Octave "sombrero" logo
From: |
John W. Eaton |
Subject: |
Octave "sombrero" logo |
Date: |
Fri, 28 Feb 2003 15:33:23 -0600 |
On 28-Feb-2003, Andy Adler <address@hidden> wrote:
| I'd like to know what the official code is
| to create the various logos on www.octave.org.
|
| This is the
| - octave "sombrero"
This is just sombrero.m, but the data may have been plotted by using
gnuplot directly. I used set contour and some other options.
| - the chaotic strange attractor
I think the function and starting point was:
function y = lorenz (x, t)
y = [10 * (x(2) - x(1));
x(1) * (28 - x(3));
x(1) * x(2) - 8/3 * x(3)];
endfunction
x = lsode ("lorenz", [3; 15; 1], (0:0.01:25)');
If you run this and then do
gset parametric
gsplot x
it should get you close to the figure on the web page. I also removed
the axes from the plot:
gset noxtics
gset noytics
gset noztics
gset noborder
gset nokey
I think I may have changed the default view angle a bit too, but I
don't remember. I originally had an animation with this object
rotating, but removed that from the web page because it was a GIF file
and because I thought it was kind of annoying after a while...
jwe
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