Integrating a function over an array of coordinate
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Hi I'm looking to evaluate an integral w.r.t T over a 3D mesh grid array of coordinates and I'm not quite sure how to do it.
Currently I have this but it doesn't work and I'm not sure why:
% Function to evaluate theta w.r.t T over a 3D meshgrid
[X, Y, Z] = meshgrid(0:1:10, 0:1:10, 0:1:10);
fun = @(T) (T.*((x.^2)+(y.^2)+(z.^2)));
fun2 = @(x,y,z) integral(fun,0,inf);
theta = arrayfun(fun2, X, Y, Z);
Any help would be greatly appreciated Thanks!
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Answers (2)
John D'Errico
on 2 Dec 2017
You CANNOT use integral on a function defined on a list or array of points. Just wanting code to do what it is not programmed to do is a waste of time.
Instead, use a tool that is designed to solve your problem.
help trapz
Prajwal Gowdru Shanthamurthy
on 20 Apr 2021
I didn't really understand the integral you're trying to compute. I'm not sure if this might help. Please take a look.
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