I think you want principal components analysis. Google on this and ?prcomp in R for more details.
-- Bert Gunter Genentech Non-Clinical Statistics South San Francisco, CA "The business of the statistician is to catalyze the scientific learning process." - George E. P. Box > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Peter J. Hernes > Sent: Thursday, July 07, 2005 12:42 PM > To: [email protected] > Subject: [R] Orthogonal Distance Regressions > > > Hi, > > I work with environmental data and want to determine > correlations between > variables that either have no "dependent/independent" > relationship or the > relationship is unknown. Therefore I prefer to use > orthogonal distance > regression (orthogonal linear regression, perpendicular sum > of squares, > etc.). I am trying to get set up to do this in R, but the various > terminologies are making it challenging for me to determine > whether this > capability exists in the base packages (it doesn't look like > it to me) or > which other package I should download to do this. Searching > the R website > for any of the three terminologies above has not given me any obvious > solutions. I would appreciate any assistance from folks with > experience > doing this type of regression. Thanks in advance! > > Peter > > > Peter J. Hernes, Ph.D. > Land, Air and Water Resources - Hydrology > University of California > One Shields Avenue > Davis, CA 95616-8628 > Tel: 530-752-7827 > Fax: 530-752-5262 > E-mail: [EMAIL PROTECTED] > Faculty webpage: http://lawr.ucdavis.edu/faculty/hernes/ > > ______________________________________________ > [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 > ______________________________________________ [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
