Thanks, Phil! Does that mean only eight colors can be used in R plot? THe following codes works for me, but, if I use the number, it does not work.
plot(svm.auc, col=2, main="ROC curves comparing classification performance\n of six machine learning models") legend(0.5, 0.6, c(ns, nb, nr, nt, nl,ne), c(2,3,4,5,6,"black")) # Draw a legend. plot(bo.auc, col=3, add=T) # add=TRUE draws on the existing chart plot(rf.auc, col=4, add=T) plot(tree.auc, col=5, add=T) plot(nn.auc, col=6, add=T) plot(en.auc, col="black",lty=4,lwd=3, add=T) On Wed, May 19, 2010 at 11:30 AM, Phil Spector <spec...@stat.berkeley.edu>wrote: > Changbin - > Please take a look at the help file for the function > "palette", which is how R maps col= numbers to colors. > Also look at the default output of that function: > > palette() >> > [1] "black" "red" "green3" "blue" "cyan" "magenta" "yellow" > [8] "gray" > > You might get better results by specifying the colors that you > want directly. > > - Phil Spector > Statistical Computing Facility > Department of Statistics > UC Berkeley > spec...@stat.berkeley.edu > > > > On Wed, 19 May 2010, Changbin Du wrote: > > plot(svm.auc, col=2, main="ROC curves comparing classification >> performance\n >> of six machine learning models") >> legend(0.5, 0.6, c(ns, nb, nr, nt, nl,ne), 2:6, 9) # Draw a legend. >> >> plot(bo.auc, col=3, add=T) # add=TRUE draws on the existing chart >> plot(rf.auc, col=4, add=T) >> plot(tree.auc, col=5, add=T) >> plot(nn.auc, col=6, add=T) >> plot(en.auc, col=9,lty="dotted",lwd=3, add=T) >> >> Hi, Dear community, >> >> I am use the above codes to draw plot, but find that col =9 is not used by >> the R. Instead, it use the col=2 when plot en.auc. WHy this happens and >> how >> to check the col allocation in R? >> >> Thanks! >> >> >> -- >> Sincerely, >> Changbin >> -- >> >> [[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. >> >> -- Sincerely, Changbin -- [[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.
