Hi, Suppose I have the following data frame.
__BEGIN__ > library(MASS) > data(crabs) > crab.pca <- prcomp(crabs[,4:8],retx=TRUE) > crab.pca$rotation PC1 PC2 PC3 PC4 PC5 FL 0.2889810 0.3232500 -0.5071698 0.7342907 0.1248816 RW 0.1972824 0.8647159 0.4141356 -0.1483092 -0.1408623 CL 0.5993986 -0.1982263 -0.1753299 -0.1435941 -0.7416656 CW 0.6616550 -0.2879790 0.4913755 0.1256282 0.4712202 BD 0.2837317 0.1598447 -0.5468821 -0.6343657 0.4386868 __END__ Is there a way to identify the "coordinate" of a max/min value of all the points above. For example the coord of maximum value is (RW,PC2) = 0.865, and coord of min value is (CW,PC2) = - 0.288. -- Gundala Viswanath ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.