Please use dput() to supply sample data. I think this does something like what you want. ####===================================================### ibrary(ggplot2) library(reshape2)
dat1<-read.table(text=" sample_1 sample_2 value_1 value_2 N C 1.9268400 36.77590 N C 0.1817890 5.58835 N C 0.2309000 7.54035 N C 0.0294559 1.50886 N C 0.4678610 14.75560 N C 10.7258000 92.13150", sep="",header=TRUE) bb <- melt(dat1) p <- ggplot(bb , aes(variable, value, fill =as.factor(value ) )) + geom_bar(stat= "identity", position = "dodge") + scale_fill_discrete(name = "Fancy Title") + scale_x_discrete(breaks=c("value_1", "value_2"), labels=c("Sample 1", "Sample 2")) p ##========================================================## John Kane Kingston ON Canada > -----Original Message----- > From: alexpadron1...@gmail.com > Sent: Sat, 4 Aug 2012 14:21:49 -0700 (PDT) > To: r-help@r-project.org > Subject: [R] ggplot2 boxplot help > > Hello, > > I have a data set that looks like this: > > name G-ID test_id g-id g > 1 00077464 C_068131 C_068131 OC_068131 - > 2 00051728 C_044461 C_044461 OC_044461 - > 3 00058738 C_050343 C_050343 OC_050343 - > 4 00059239 C_050649 C_050649 OC_050649 - > 5 00001761 C_000909 C_000909 OC_000909 - > 6 00005119 C_002752 C_002752 OC_002752 - > locs sample_1 sample_2 value_1 > value_2 > 1 37316550-37317847 N C 1.9268400 > 36.77590 > 2 27058468-27060176 N C 0.1817890 > 5.58835 > 3 4761739-4763268 N C 0.2309000 > 7.54035 > 4 14565311-14567393 N C 0.0294559 > 1.50886 > 5 38670994-38675694 N C 0.4678610 > 14.75560 > 6 48362804-48380794 N C 10.7258000 > 92.13150 > > > > In this dataset, sample_1 corresponds to value_1 and sample_2 corresponds > to > value_2. How can I graph this in ggplot2's boxplot function? I am not > quite > sure how to tell R that sample_1 and sample_2 columns correspond to > value_1 > and value_2 using ggplot2. > > Can anyone shed some light on this? > > Thanks. > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/ggplot2-boxplot-help-tp4639187.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. ____________________________________________________________ FREE ONLINE PHOTOSHARING - Share your photos online with your friends and family! Visit http://www.inbox.com/photosharing to find out more! ______________________________________________ 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.