You need to utilize mesh function. This way:

Z =meshgrid(z).

Then you can do a whole bunch of 3D plots. Like so:

surf(x,y,Z)

Hope it works

Regards,

NR

If x and y are the function coordinates of the grid and z is the value of the function then use surf(x,y,z), like Nicolus suggested.

Hi, in first you must transform the whole vectors ( vectors must be the same lengths) to matrices by using the function "meshgrid" then for 3D plots you can use "mesh", "surf". as an example:

%--------------------------------------------------------------------------------------------------------------

x = -8:.5:8; y = -8:.5:8;

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

z = sin(X)./Y;

mesh (z)

%--------------------------------------------------------------------------------------------------------------

Best regards,

Thank you all for the messages, I think there was a failure in my communication therefore apologize-me.

x = -8:.5:8; y = -8:.5:8;

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

until this point I got it. But what exactly I'm getting stuck relay on z. My z is not a function of X and Y, my z is another vector thus I can't create a surf plot. I just can plot a scatter in 3d. 

What understand from you guys is that I should do matrix j = [x,y,z] than mesh(j).  It is?

Hi, Alexandre Sarmento Queiroga, transform also your z to the matrix:

Z = meshgrid (z)

Hope it works

Regards,

Thank you Hammoudi Abdezarek and others, I have read carefully your messages and now I really get it. 

Hammoudi you can call me alexandre is more simple. Thank you.

Ok Alexandre, you are welcome dear.

Regards

Hi

Have a look at this page,

https://www.ous-research.no/home/hovig/Ekstrom/16790

This is 3D modeling of mtDNA mutations in tumor using matlab.

How about generating a batch of values on a regular grid by spline interpolation and then ploting.