Hi dear list,
I'm scrambling with this:
i have a p-dimensional data frame for which i want to have a pairs() plot, with
ellipse added in each lower.panel.
I want the ellipse's parameter (mu, sigma) to be extracted from the appropriate
entries in a pre-computed matrix ("dab" in the code below).
Can it be done ?
Thanks in advance,
melly<-function (x, y, col = par("col"), bg = NA, pch = par("pch"),cex = 1){
points(x, y, pch = pch, col = col, bg = bg, cex = cex)
ok <- is.finite(x) & is.finite(y)
if (any(ok))
ellipse(mu=dab$center[?],sigma=dab$cov[?,?])
}
pairs(wf[,1:5],diag.panel=bagwag,col=wc,pch=wp,cex=.5,lower.panel=melly)
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