Princomp help needed to reduce-change a dimension of the matrix
1 view (last 30 days)
Show older comments
I have a matrix X 400x500 (rows x column) and I use
[coeff,score,variance]=princomp(X);
%Calculate explained variance
expvar=100*variance/sum(variance);
figure; pareto(expvar);
xlabel('Number of Principal Components');
ylabel('Explained Variance %');
title('Pareto of Explained variance vs. Principal Component Number');
From this figure,I note that the first ten principal components accounts for more that 70% of the total variance
Now, how can I get my new reduced matrix using coeff,score,variance? Please help me,I'm stuck here Thank you
0 Comments
Answers (1)
See Also
Categories
Find more on Statistics and Machine Learning Toolbox in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!