# find the eigenvector corresponding to the largest eigenvalue

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## find the eigenvector corresponding to the largest eigenvalue

 Hi, If I use the eigen() function to find the eigenvalues of a matrix, how can I find the eigenvector corresponding to the largest eigen value? Thanks!         [[alternative HTML version deleted]] ______________________________________________ [hidden email] mailing list https://stat.ethz.ch/mailman/listinfo/r-helpPLEASE do read the posting guide http://www.R-project.org/posting-guide.htmland provide commented, minimal, self-contained, reproducible code.
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## Re: find the eigenvector corresponding to the largest eigenvalue

 On 27-04-2012, at 17:41, Rebecca wrote: > Hi, > If I use the eigen() function to find the eigenvalues of a matrix, how can I find the eigenvector corresponding to the largest eigen value? What does the documentation of eigen() say in the Value section for values? Sorted in decreasing order. So the first item of ..\$values is the largest eigenvalue and thus the first column of ..\$vectors is the corresponding eigenvector. Example n <- 3 A  <- matrix(round(runif(n*n),2),nrow=n) A evv.A <- eigen(A) evv.A k <- which(abs(evv.A\$values)==max(abs(evv.A\$values))) evv.A\$vectors[,k] k Berend ______________________________________________ [hidden email] mailing list https://stat.ethz.ch/mailman/listinfo/r-helpPLEASE do read the posting guide http://www.R-project.org/posting-guide.htmland provide commented, minimal, self-contained, reproducible code.