prtPreProcPca   Principle Component Analysis
 
    PCA = prtPreProcPca creates a Principle Component Analysis object.
 
    PCA = prtPreProcPca('nComponents',N) constructs a
    prtPreProcPCP object PCA with nComponents set to the value N.
 
    A prtPreProcPca object has the following properites:
  
    nComponents    - The number of principle componenets
 
    A prtPreProcPca object also inherits all properties and functions from
    the prtAction class
 
    Example:
 
    dataSet = prtDataGenFeatureSelection;    % Load a data set
    pca = prtPreProcPca;            % Create a prtPreProcPca object
                         
    pca = pca.train(dataSet);       % Train the prtPreProcPca object
    dataSetNew = pca.run(dataSet);  % Run
  
    % Plot
    plot(dataSetNew);
    title('PCA Projected Data');