Error using plot, Data must be a single input

x211 = linspace(-5,5,100);

x221 = linspace(-5,5,100);

f22 = 100*(x221-x211.^2).^2 + (1-x211).^2;

plot(x211,x221,f22);

hold on;

plot(S_space(:,2),S_space(:,3),S_space(:,4),'ro-')

% If I use above partial code, then

% Error using plot. Data must be a single input of y-values or one or more pairs of x- and y-values.

Answer 1

[MJFcoNaN]

For 3D data, you should use plot3

x211 = linspace(-5,5,100);
x221 = linspace(-5,5,100);
f22 = 100*(x221-x211.^2).^2 + (1-x211).^2;
plot3(x211,x221,f22);