MATLAB: Interpolated 2D sections out of 3D plot

Question

I have a number of data for 3 variables – data points in 3D – which can be plotted using plot3(). I want to make 2D sections from this plot, keeping one of the 3 variables, lets call it z, constant at different values (set up an array of constant z values and make 2D sections in x-y plane for each value). I want to use interpolation to get the most accurate 2D section. Any help on how I can do this?

Answer 1

Use griddata() (use griddata(x,y,z,xq,yq,'method','cubic') if interpolation is needed) to build a surface

Use contour() to create a crossection at specific height