search for: pcaproj

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2007 Feb 13
1
Questions about results from PCAproj for robust principal component analysis
Hi. I have been looking at the PCAproj function in package pcaPP (R 2.4.1) for robust principal components, and I'm trying to interpret the results. I started with a data matrix of dimensions RxC (R is the number of rows / observations, C the number of columns / variables). PCAproj returns a list of class princomp, similar to...
2015 Jul 10
0
colour palettes in biplot
...plot(x, type = "n", xlim = xlim, ylim = ylim, col = col[[1L]], ## << xlab = xlab, ylab = ylab, sub = sub, main = main, ...) Existing code should not be broken by this change. Yours, gs. >From valentin.todorov at chello.at: > library(rrcov) > > pc <- PcaProj(iris[,1:4], 3, scale=TRUE) > windows(8,5) > par(mfrow=c(1,2)) > biplot(pc) > > col <- list(xcol=as.numeric(iris[,5])+2, ycol="red") > biplot(pc, col=col) > -- G. Sawitzki StatLab Heidelberg Im Neuenheimer Feld 294 D 69120 Heidelberg Tel. (+49) 62 21 - 54 89 79...