Hi, dear R pros I try to understand eigen(). I have seen, that eigen() gives the eigenvectors normalized to unit length.
What shall I do to get the eigenvectors not normalized to unit length? E.g. take the example: A [,1] [,2] V1 0.7714286 -0.2571429 V2 -0.4224490 0.1408163 Calculating eigen(A) "by hand" gives the eigenvectors (example from Backhaus, multivariate analysis): 0.77143 and 0.25714 -0.42245 0.14082 but even eigen(solve(Derror)%*%Dtreat, symmetric = FALSE, EISPACK =TRUE) which according to ?eigen should not necessarily give the normalized eigenvectors give the vectors (such as eigen()): $vectors [,1] [,2] [1,] 0.8770963 0.3162278 [2,] -0.4803146 0.9486833 -> how can I replicate the result we get "by hand" (I ask because for students it is "nice" to see the same results with R as the results written in textbooks, derived "manually"? Thanks a lot Christoph -- Christoph Lehmann <[EMAIL PROTECTED]> University Hospital of Clinical Psychiatry ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help