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sparse matrix support, Debian and PDEs :)


From: Christophe Prud'homme
Subject: sparse matrix support, Debian and PDEs :)
Date: Wed, 26 Apr 2006 10:07:44 +0200
User-agent: KMail/1.9.1

All,

while working on the book "scientific computing with matlab and octave" and 
specially the chapter on Partial differential equations, I was very happy 
to see that octave-2.9.5 works with the scripts of the book. Basically it 
works for me since Monday :)

for example attached you have a simple poisson pde solver (finite difference)
with a convergence test. It works flawlessly (as in matlab) under 
Debian/GNU/Linux and octave 2.9.5 (using debian patch  -6 which is linked 
with ufsparse maintained by me in Debian and which was just accepted in 
Debian on Monday).
So thanks John, David and other contributors for the sparse matrix support :)


octave-2.9.5:1> poissonfd_test1
error =

   1.3565e-01   4.3393e-02   1.2308e-02   3.2775e-03   8.4557e-04
p =

   1.6443e+00   1.8179e+00   1.9089e+00   1.9546e+00

p denotes the convergence rate which is 2 as expected (should decrease like 
h^2)

Best regards
C.
-- 
Christophe Prud'homme
EPFL SB IACS CMCS
MA B2 534 (Bâtiment MA)
Station 8
CH-1015 Lausanne
Tel: +41 (0)21 693 25 47
Fax: +41 (0)21 693 43 03

Attachment: poissonfd.m
Description: Text Data

Attachment: poissonfd_test1.m
Description: Text Data


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