Hello, It's on bioconductor. Try changing the repository when installing packages
Best Paul -=-=-=-=-=-=-=-=-=-=-=-= Paul Hewson Lecturer in Statistics School of Mathematics and Statistics University of Plymouth Drake Circus Plymouth PL4 8AA tel (01752) 232778 (Campus) tel (01752) 764437 (Tamar Science Park) fax (01752) 232780 email: [EMAIL PROTECTED] web: http://www.plymouth.ac.uk/staff/phewson -=-=-=-=-=-=-=-=-=-=-=-= -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Birgit Lemcke Sent: 28 November 2007 17:05 To: Kevin Wright Cc: R Hilfe Subject: Re: [R] PCA with NA Hello, unfortunately I can not find the pcaMethods package. Birgit Am 26.11.2007 um 16:26 schrieb Kevin Wright: > The pcaMethods package offers a collection of different algorithms for > PCA, some of which (NIPALS and others) can be used on data that have > missing values. > > Kevin Wright > > > On Nov 24, 2007 4:59 PM, Hartmut Oldenbürger <[EMAIL PROTECTED]> > wrote: >> Hi Birgit, and All >> >> Possibly you should not consider the case completed ;-) >> There is an important alternative to imputing means, or estimates >> from >> first or second order >> regression (Frane, Psychometrica, BMDP): partial-least-squares >> (Wold), >> which uses as much >> information from the data as possible to estimate the principal >> components, or the missing data. >> >> Stephane Dray, also from Lyon, provides 'nipals' here: >> http://biomserv.univ-lyon1.fr/~dray/software.php >> There is also an interesting paper. - In case, you use PLS to >> estimate >> and impute, set the >> number of factors as high as reasonably possible, e.g. m-1, when m is >> the number of variables. >> best - Hartmut >> Oldenbürger >> --- >> [EMAIL PROTECTED] >> http://www.wipaed.wiso.uni-goettingen.de/~holdenb1 >> >> >> ______________________________________________ >> 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. >> Birgit Lemcke Institut für Systematische Botanik Zollikerstrasse 107 CH-8008 Zürich Switzerland Ph: +41 (0)44 634 8351 [EMAIL PROTECTED] ______________________________________________ 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. ______________________________________________ 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.
