[Gmsh] integrate bugs

[Christophe Geuzaine]

Lars Rindorf wrote:
> I solved the first 'bug'. I accidently integrated also over the boundaries as well as the open domain. The second bug still holds.
>  

I cannot reproduce this. Could you send the file?



> KR Lars
> 
> ________________________________
> 
> From: Lars Rindorf
> Sent: Tue 1/22/2008 10:02 AM
> To: gmsh at geuz.org
> Subject: integrate bugs
> 
> 
> Dear Christophe
>  
> I found a couple of errors (I think) in the integrate plugin to gmesh. My OS is XP.
>  
> If I integrate '1' over a 1x1 square th plugin returns '3', if the square is 2x2 it returns '8'. It seems to follow a formula L^2 + 2*L, where L is the length of the side of the square. I also tried to integrate x^2 over 1x1 and it returned 1/4 instead of 1/12, wring by the factor of '3'.
>  
> There is a second error in the plugin 'Integrate'. Plot two scalars, first a and then b, integrate b and gmesh integrates a (the first), no matter if a or b is chosen in the view of the plugin.
> 
> Kind regards
> 
> Lars Rindorf
> 
> 
>  
> 
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> 


-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine