Error using contour: Z must be at least a 2x2 matrix.

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What's the problem with the following code?
f=input('enter function: ','s');
f = str2func(['@(x,y)' vectorize(f)]);
[X,Y]=meshgrid(-10:.5:10);
contour(X,Y,f(x,y));
When I enter sin(x)+cos(y) the following error occurs:
Z must be at least a 2x2 matrix.

Accepted Answer

Andrei Bobrov
Andrei Bobrov on 13 May 2017
Your typo
Should be:
contour(X,Y,f(X,Y));
  2 Comments
Steven Lord
Steven Lord on 13 May 2017
Use the figure function to open a new figure window, or use subplot to create two or more separate axes in one figure window.

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