search for: prestige2

...names as labels and I want my data to be divided into two groups defined by the column "tresh". Leaving away the groups-command gives me the right labels but they are not distinguished by colors according to "tresh". Does anybody know why the following example doesn't work? Prestige2 <- transform(Prestige,thresh=(income>5000)) attach(Prestige2) scatterplot(income~education,data=Prestige2, xlab="Education",ylab="Income",cex.lab=1.2, smooth=TRUE,spread=FALSE,reg.line=TRUE,lwd=2, groups=thresh,by.groups=TRUE,legend.plot...