Look at the RColorBrewer package to understand how you can create the colors you want. Also do "?colorRampPalette"
On Wed, May 19, 2010 at 4:24 PM, Changbin Du <changb...@gmail.com> wrote: > 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. > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? ______________________________________________ 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.