I'm trying to make a contour plot using discrite x,y, and z values and the examples in all the help files assume z is just a function, not the z value associated with my x and t value. The x and y values are scatered,How can I do this? Thanks, Rick

I'm trying to make a contour plot using discrete x,y, and z values and the examples in all the help files assume z is just a function, not the z value associated with my x and y value. The x and y values are scatered,How can I do this? Thanks, Rick

Answer 1

[Jon]

You should search before posting. The first hit of a Google search suggests

tri = delaunay(xx,yy); %x,y,z column vectors
trisurf(tri,xx,yy,zz);

Surf requires that Z be a matrix. You must build that matrix from your scatter data using something like delaunay.

Also, see: http://www.mathworks.com/matlabcentral/fileexchange/5105-making-surface-plots-from-scatter-data