3d plot

Hi! I have a vector lets say x=1:81 and the same for y and z and I would like to plot it with surf. My problem is that I need to reorganise my vectors to grids so I tried meshgrid but I don't now if i understood it, becouse i would like a grid that has the size 9x9 but I got one with 81x81 am I doing something wrong or is it some other way to solve this problem?

Answer 1

[Wayne King]

meshgrid() returning 81x81 for situation you describe is correct, but what you indicate seems that you want to first reshape your x,y, and z vectors in 9x9 matrices

 x1 = reshape(x,9,9);
 y1 = reshape(y,9,9);
 z1 = reshape(z,9,9);
 surf(x1,y1,z1);

Not sure if that makes sense for your data.