%   mapping operations, example 2,
%   untrained stacked combining
%
%   Copy to Matlab command window and run

% make sure prdatasets is in the path
prdatasets

% load Iris dataset
a = iris  

% define first principal component
u1 = pca([],1)

% define first LDA (Fisher mapping) component
u2 = fisherm([],1)

% combine to untrained mapping to 2D space
u = [u1 u2]

% train, map original dataset and show scatter
w = a*u
b = a*w
scatterd(b)