1/22/2024 0 Comments PCA of certain columns R![]() Yes, that sounds like it would be useful to me. PrincipalComponentsAnalysis re-expresses the data in terms of variables u and v, which are linear combinations of x and y, thus returning points (u1,v1) and (u2,v2) such that To clarify what I am looking for, suppose my original data is expressed in terms of two variables x and y, and I have two data points, (x1, y1) and (x2, y2). Is it really the case that Mathematica cannot do this directly and, if so, what is the simplest workaround? I feel there ought to be a simple command or function that will do it, whereas the proposed solutions involve cumbersome manual manipulations. I have seen this question asked elsewhere and not received any very satisfactory answer. How do I get the coefficients mapping the values of the original variables to their values expressed via the principal components. ![]() ![]() ![]() Mathematica provides the function PrincipalComponentAnalysis which transforms data to be expressed in terms of its principal components. ![]()
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