How to plot a function of two variable one defined in Matlab

Question

How do you plot a user-defined function of two variables in Matlab?

you might find this plot gallery useful (click on any plot and you will see the code to produce it). In you case that would be a surface plot — Amro
– Amro, Commented Jul 27, 2012 at 0:57

Isaac · Accepted Answer · 2012-07-27 00:42:35Z

1

X, Y = meshgrid(xs, ys); % values of x and y at which we want to evaluate
Z = my_func(X,Y);
surf(X,Y,Z);

Alternatively, if your function is not vectorized,

X, Y = meshgrid(xs, ys); % values of x and y at which we want to evaluate
for x = 1:length(xs)
  for y = 1:length(ys)
    Z(x,y) = my_func(X(x,y), Y(x,y));
  end
end
Z = my_func(X,Y);
surf(X,Y,Z);

answered Jul 27, 2012 at 0:42

Isaac

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user85109 · Accepted Answer · 2012-07-27 02:08:09Z

1

ezsurf is a simple solution, or ezmesh, or ezcontour, or ezsurfc, or ezmeshc.

answered Jul 27, 2012 at 2:08

user85109

Comments

Arman · Accepted Answer · 2012-07-27 10:29:04Z

0

It has many types.

You can go plot gallery and select your variable and then types like mesh, 3D, surface, ...

answered Jul 27, 2012 at 10:29

Arman

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