How to plot a cross-section of a surface plot

I have a 3D plot that's generated by 3 900x900 matrices X,Y,Z. I want to plot the Z values at X==300micros(note:matrix dimension has nothing to do with values of X dimension) for all values of Y.

Any Idea how I could do this?

Answer 1

[Fangjun Jiang]

I think the function you are looking for is interp2(). For example:

M=10;
N=10;
X=-1:1/M:1;
Y=-1:1/N:1;
Z=membrane(1,M,N);
figure(1);surf(X,Y,Z);
x=0.3;
z=interp2(X,Y,Z,x,Y);
figure(2);plot(Y,z);

[Shayan]

I tried it works, YOU DA MAN!

Answer 2

[Jul Smith]

Hello, I have a file of contours that I want to visualiza in a cross section and another file of points x,y,z. How can I integrate point data into a cross section of those contours. I have tried interp function without success. Any ideas?

THANKS, Jul