How can I create a 3D grouped scatter plot in Statistics Toolbox 7.2 (R2009b)?

I want to plot a grouped scatter plot in 3D, similar to the 2D version created by GSCATTER.

Answer 1

[MathWorks Support Team]

The ability to plot a 3D GSCATTER plot is not available in Statistics Toolbox 7.2 (R2009b).

To workaround this issue, you can first call GSCATTER with just the X and Y data and capture the output argument (the handles to the object created). Following that, use the handles to set the 'ZData' property. Here is an example:

% create random dataset

x = randn(200,1);

y = randn(200,1);

z = randn(200,1);

g = [1*ones(50,1); 2*ones(50,1); 3*ones(50,1); 4*ones(50,1); ];

% call GSCATTER and capture output argument (handles to lines)

h = gscatter(x, y, g);

% for each unique group in 'g', set the ZData property appropriately

gu = unique(g);

for k = 1:numel(gu)

      set(h(k), 'ZData', z( g == gu(k) ));

end

view(3)