PCA: featureNormalize(X) - File Exchange

Code covered by the BSD License

Highlights from
PCA

featureNormalize(X) FeatureNormalize.m Normalizes the features in X
pca(X,n) this function implements pca and
main.m
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from PCA by Devinder
this implements the PCA algorithm. User can choose/input the no.of features in the reduced Dataset.

featureNormalize(X)

function [X_norm, mu, sigma] = featureNormalize(X)
%FeatureNormalize.m Normalizes the features in X 

mu = mean(X);
X_norm = bsxfun(@minus, X, mu);

sigma = std(X_norm);
X_norm = bsxfun(@rdivide, X_norm, sigma);


end

Highlights from PCA

Highlights from
PCA