Is there an example available for the GRIDDATA3 function in MATLAB 7.0.1 (R14SP1) documentation?

I would like to see an example of how to use the GRIDDATA3 function in MATLAB 7.0.1 (R14SP1).

Answer 1

[MathWorks Support Team]

This enhancement has been incorporated in Release 2006a (R2006a). For previous product releases, read below for any possible workarounds:

As an example, assume we have scattered points in 3-space "(x, y, z)", and their corresponding function value "v = v(x,y,z)". Some sample data can be created using:

x  = rand(5,5);

y  = rand(5,5);

z  = rand(5,5);

v = rand(5,5);

plot3(x,y,z,'.')

Here you can interpolate the function "v" at a set of gridded data points using GRIDDATA3. For example,

[X Y Z] = meshgrid(0:.1:1); % Create gridded data

v = griddata3(x,y,z,v,X,Y,Z); % Interpolate v at the gridded data points.

Now you have the function value at the gridded data points, i.e. "v = % v(X,Y,Z)".