How to mesh plot sum of sine waves

Hello.

I am working on a project for school.

When I run the code, it tells me that 'Z' needs to be a matrix.

I would appreciate any help.

x=-1:0.01:1;
y=-1:0.01:1;
[X,Y]=meshgrid(x,y);
Z=80.*sin(150*x)+90.*sin(200*x);
mesh(X,Y,Z)

Answer 1

[Star Strider]

Give it the ‘X’ and ‘Y’ matrix arguments rather than the vector arguments —

x=-1:0.01:1;
y=-1:0.01:1;
[X,Y]=meshgrid(x,y);
Z=80.*sin(150*X)+90.*sin(200*Y);

figure
mesh(X,Y,Z)

With that change, it works.

.

[서영 이]

Thank you so much for helping me.

I was working with it for a long time..

You are awesome!

[Star Strider]

As always, my pleasure!

Thank you!