# [Scilab-users] Triple integral (int3d) query

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## [Scilab-users] Triple integral (int3d) query

 Hello all, I have worked out a simpler input for 2D integration with a function that calls int2d: function [Integral, error]=Integral_2d(xmin,xmax,ymin,ymax,f)     X=[xmin xmax xmax; xmin xmax xmin]'     Y=[ymin ymin ymax; ymin ymax ymax]'     [Integral, error]=int2d(X,Y,f) endfunction This simplifies the issue for triangulation and only needs the x, y limits and function to integrate; tested with the int2d example and works fine. Is it feasible to use the same methodology for int3d - triple integral - for defining the tetrahedron vertices? Really all one wants to do is enter the limits of x, y and z, with a function f(x,y,z). Any suggestions would be welcome Lester -- Sent from: http://mailinglists.scilab.org/Scilab-users-Mailing-Lists-Archives-f2602246.html_______________________________________________ users mailing list [hidden email] http://lists.scilab.org/mailman/listinfo/users
 Hello Lester, Le 01/01/2021 à 09:16, arctica1963 a écrit : ```Hello all, I have worked out a simpler input for 2D integration with a function that calls int2d: function [Integral, error]=Integral_2d(xmin,xmax,ymin,ymax,f) X=[xmin xmax xmax; xmin xmax xmin]' Y=[ymin ymin ymax; ymin ymax ymax]' [Integral, error]=int2d(X,Y,f) endfunction This simplifies the issue for triangulation and only needs the x, y limits and function to integrate; tested with the int2d example and works fine. Is it feasible to use the same methodology for int3d - triple integral - for defining the tetrahedron vertices? Really all one wants to do is enter the limits of x, y and z, with a function f(x,y,z). Any suggestions would be welcome``` With Scilab 6.0.2 you can install the CGLAB toolbox atomsInstall("cglab"). Then its delaunay_3() function will yield tetrahedrons required by int3d(). An intermediate step might be required to specify tetrahedrons in the way that int3d() expects. Best wishes and Happy New Year 2021 to you, and to all Scilab users! Samuel _______________________________________________ users mailing list [hidden email] http://lists.scilab.org/mailman/listinfo/users