![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/315645/image.png)
Confusion on Meshgrid and interp2
2 次查看(过去 30 天)
显示 更早的评论
So i have x and y coordinates and i need to create sample points for the x and y coordinates to be evaluated at. I must use interp2 on these points in order to graph them.
I thought it would look something like this.
x = -0.5:0.1:0.5;
y = -0.5:0.1:0.5;
k = 0.77;
[x,y] = meshgrid(x,y);
z = k*(x.^2-y.^2);
m = [-0.5 0 0.5];
n = [-0.5 -0.25 0.25 0.5];
[m,n] = meshgrid(m,n);
f = interp2(x,y,z,m,n);
surf(x,y,f)
I am confused on where to go from here any help would be greatly appreciated.
1 个评论
回答(1 个)
David Hill
2020-6-2
x = -0.5:0.1:0.5;
y = -0.5:0.1:0.5;
k = 0.77;
[x,y] = meshgrid(x,y);
z = k*(x.^2-y.^2);
m = [-0.5 0 0.5];
n = [-0.5 -0.25 0.25 0.5];
[m,n] = meshgrid(m,n);
f = interp2(x,y,z,m,n);%you are interpolating m and n to the x and y values; therefore f is the size of [m,n]
surf(m,n,f);%have to plot f against m and n (same size)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Surface and Mesh Plots 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!