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How to calculate volume of surf plot (3d plot) en matlab?

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How to calculate volume of surf plot (3d plot) en matlab?
using variable x and y and function z

Accepted Answer

Star Strider
Star Strider on 17 Sep 2021
The surf plot arguments are matrices, so use trapz:
x = 1:10;
y = 1:20;
[X,Y] = meshgrid(x,y);
z = exp(-((X-5)/5.*(Y-10)/10).^2)
z = 20×10
0.5955 0.7471 0.8784 0.9681 1.0000 0.9681 0.8784 0.7471 0.5955 0.4449 0.6639 0.7942 0.9027 0.9747 1.0000 0.9747 0.9027 0.7942 0.6639 0.5273 0.7308 0.8383 0.9246 0.9806 1.0000 0.9806 0.9246 0.8383 0.7308 0.6126 0.7942 0.8784 0.9440 0.9857 1.0000 0.9857 0.9440 0.8784 0.7942 0.6977 0.8521 0.9139 0.9608 0.9900 1.0000 0.9900 0.9608 0.9139 0.8521 0.7788 0.9027 0.9440 0.9747 0.9936 1.0000 0.9936 0.9747 0.9440 0.9027 0.8521 0.9440 0.9681 0.9857 0.9964 1.0000 0.9964 0.9857 0.9681 0.9440 0.9139 0.9747 0.9857 0.9936 0.9984 1.0000 0.9984 0.9936 0.9857 0.9747 0.9608 0.9936 0.9964 0.9984 0.9996 1.0000 0.9996 0.9984 0.9964 0.9936 0.9900 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000
zvol = trapz(x,trapz(y,z))
zvol = 158.0451
figure
surf(x, y, z)
grid on
.
  4 Comments
Star Strider
Star Strider on 17 Sep 2021
My pleasure!
If my Answer helped you solve your problem, please Accept it!
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