%   mapping operations, example 1,
%   stacked combining
%
%   Copy to Matlab command window and run

% make sure prdatasets is in the path
prdatasets

% load Iris dataset
a = iris  

% compute first principal component
w1 = pca(a,1)

% compute first LDA (Fisher mapping) component
w2 = fisherm(a,1)

% combine to 2D space
w = [w1 w2]

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