Surf Plot error code with Z having to be defined as a matrix, not scalar or vector

I'm trying to graph a 3D function z=(x-y)/(1+y) as a challenge.

Here is what I have so far:

>> x=-1:1:1;

>> y=-1:1:1;

>> [X,Y]=meshgrid(x,y);

>> Z=[(x-y)/(1+y)];

>> surf(X,Y,Z)

It is returning:

Error using surf (line 71)

Z must be a matrix, not a scalar or vector.

I do not know what the problem is with my code, can someone help? Thank you!

Answer 1

[Sulaymon Eshkabilov]

There are a couple of errs. Here is the corrected code

x=-1:1:1;
y=-1:1:1;
[X,Y]=meshgrid(x,y);
% Ver 1.
Z=(x(:)-y)./(1+y);
surf(X,Y,Z')

% or Ver 2.
Z=(X-Y)./(1+Y);
surf(X,Y,Z)

[beginnermatlab]

Thank you so much!

[Sulaymon Eshkabilov]

Most welcome!