Dear R community Have just recently got back into R after a long break and have been amazed at how much it has grown, and how active the list is! Thank you so much to all those who contribute to this amazing project.
My question: I am trying to calculate Mahalanobis distances for a matrix called "fgmatrix" >dim(fgmatrix) [1] 76 15 >fg.cov <- cov.wt(fgmatrix) >mahalanobis(fgmatrix, center = fg.cov$center, cov = fg.cov$cov) Then I get an error message "Covariance matrix is apparently singular" What does this mean? I can't see anything strange about the covariance matrix, and am not getting anywhere with the help files. >dim(fg.cov$cov) [1] 15 15 >length(fg.cov$center) [1] 15 Thanks -- Karen Kotschy Centre for Water in the Environment University of the Witwatersrand Johannesburg South Africa P/Bag X3, Wits, 2050 Tel: +2711 717-6425 ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
