[Gmsh] Evaluate plugin

[Christophe Geuzaine]

Simon CORBIN wrote:
> Hi,
>  
> Just a simple question. Is it possible to calculate the absolute values 
> of field components using the evaluate plugin ? In the same way, is it 

yes, using e.g. Fabs(v2) to compute the absolute value of the second 
component


> possible to calculate maximum values of several fields ? In fact, I 
> would like to calculate the equivalent stress intensity Seq = 
> MAX(ABS(S1-S2), ABS(S2-S3), ABS(S3-S1)).

unfortunately no: we should add "Max" as a function in MathEval. If you 
have some time... (contrib/MathEval/symbol_table.cpp)

>  
> Thank you for your help
>  
>  
> Simon
>  
> 
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-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine