Dear Marcel, See ?princomp.
HTH, Jorge On Thu, Jul 3, 2008 at 5:15 AM, Bio7 <[EMAIL PROTECTED]> wrote: > > Dear R users, > > i would like to apply a PCA on image data for data reduction. > The image data is available as three matrices for the > RGB values. At the moment i use > > x <- data.frame(R,G,B)#convert image data to data frame > pca<-princomp(x,retx = TRUE) > > This is working so far. > >From this results then i want to create a new matrix > from the first (second..) principal component. Here i stuck. > So my question is how can i create this matrix from the results of the PCA. > (Maybe there is also a faster method available for PCA?) > > Any answers or advices are appreciated > > With kind regards > > M.Austenfeld > > -- > View this message in context: > http://www.nabble.com/PCA-on-image-data-tp18255217p18255217.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. > [[alternative HTML version deleted]] ______________________________________________ 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.
