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Re: Integration over polytop


fred.esia at free.fr wrote:

>I would like to integrate function over domain defined by inequalities
>
>Actually, I use the function Boole[]:
>NIntegrate[f[x,y,z,t]Boole[ineq],{x,-Infinity,Infinity},{y,-Infinity,Infinity},{z,-Infinity,Infinity},{t,-Infinity,Infinity}]
>
>But this is too slowly and the result don't have a good precision.
>
>How can I do to integrate, functions that depend of many (3,4,...10) variables
>over domain define by inequalities (linear or quadratic)?
>
>Thanks
>
>
>
>  
>
You might want to try Maxim's piecewise integrate package.

Although it does not seem to work for integration of the complex 
piecewise  functions in the real domain :-(

http://library.wolfram.com/infocenter/MathSource/5117/


Best regards

Pratik .

-- 
Pratik Desai
Graduate Student
UMBC
Department of Mechanical Engineering
Phone: 410 455 8134



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