MATLAB: 5d numerical integration

multi-dimensional numeric integral

does matlab have any tools to approximate a 5d def. integral by numer. integration?

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triplequad() a doublequad().

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MATLAB: Numerical integration

guys, thanks for the reply.

In my case there is no function to call, there are just experimental data points to be integrated; arrays to say and I found trapz to be best suited for such an application

MATLAB: Numerical integration

This turned out to be surprisingly tricky, but here is the solution. First, define a function

function fzv = integrateOverSecondPair(fun,x,y,zmin,zmax,vmin,vmax)
% DBLQUAD evaluates FUN for a vector x and scalar y. The backwards loop is
% Matt Fig's dynamic preallocation.
for ii=numel(x):-1:1
  g = @(z,v) fun(x(ii),y,z,v);
  fzv(ii) = dblquad(g,zmin,zmax,vmin,vmax);
end

Then use the commands

fzv = @(x,y) integrateOverSecondPair(@f,x,y,zmin,zmax,vmin,vmax);
fxyzv = dblquad(fzv,xmin,xmax,ymin,ymax);

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MATLAB: Numerical integration

MATLAB: Numerical integration

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