Quick question about "surf" or "surfc"

Hi
The problem is, I need to plot a 3D surface in each loop of my computations, lets say water depth. the computational domain is rectangular but it is not square, so the number of elements in X direction is not the same as the number of elements in Y direction.
for square domains I used to use the command :
xx1=linspace(0,Xlength,NX);
yy1=linspace(0,Ylength,NY);
[x1,y1]=meshgrid(xx1,yy1);
surf(x1,y1,z);
view(125,20);
but when managing to use a non-square domain it gives the error:
??? Error using
==> surf at 78
Data dimensions
must agree.
Error in ==>
test at 53
surf(x1,y1,z);
removing the x1,y1 from the surf(x1,y1,z) command gives a 3D with the wrong scale and it is not useful at all
, so please advice

 采纳的回答

size(x1)
size(y1)
size(z)
Will show that not all three matrix sizes are the same. Remember meshgrid swaps the inputs unlike ndgrid

3 个评论

sure the x1 and y1 sizes are not same, please check the link in my first post to see the 2D domain (x-y) I am managing to plot z on it
Yup, but that 2D domain was not produced by meshgrid.
Use ndgrid() instead of meshgrid() to do what you want.
Thanks Sean de Wolski. Thanks Walter Roberson, that replacement made it work.

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