after scatter3(), how to draw a contour line in the same figure？

Hi, everybody,I have draw a scatter3 picture and I want to add some counter lines in this piture. Any one can help me ? after using this,

scatter3(x,y,z)

as you can see there are discrete points， but a lot of ponit have same value(z), so I want to add some counter lines to it like the next picture

what's more, my data(x,y,z) is discrete, all of them are

(2345*1 double)

[KSSV]

Wont hold on and plotting contour work?

Answer 1

[Rollin Baker]

Hi Hong,

As KSSV said, you just need to call 'hold on;' to plot both graphs on the same figure. I don't know exactly what your data looks like, but here is some example code that shows how to get a scatter plot and a contour map on the same figure.

 x = -2:0.25:2;
 y = -2:0.25:2;
 z = x.*exp(-x.^2-y.^2);
 scatter3(x, y, z);

 hold on;
 [X,Y] = meshgrid(x);
 Z = X.*exp(-X.^2-Y.^2);
 contour3(X,Y,Z,30);

I hope you find this example helpful. Good luck on your project!