Why I'm getting different result while performing PCA with pca and princomp?

[c,s,l] = princomp(x);

[c,s,l] = pca(X);

% First Command returns with complete i*j but Second returns i*(j-1).

Answer 1

[Aditya]

Hi Hitesh,

I understand that you are facing issues with PCA and PRINCOMP.

• Use pca: It is the recommended method for PCA in MATLAB, offering better performance and more options.
• Check Data: Ensure your data is well-prepared and free of NaNs unless you are using options to handle them.
• Understand Output: Be aware of the default behavior regarding the number of components returned, and adjust using options if necessary.