On 04/09/2010 08:55 PM, Samantha Reynolds wrote:
HiI was hoping someone might be able to help me I have this data: birdid timetaken numvisits ptachchoice time bold 1087 8 10 1 AM 0 1087 28 6 1 PM 0 1087 13 3 2 AM 0 1087 121 0 2 PM 0 1046 121 0 1 AM 1 1046 121 0 1 PM 1 i've plotted the means like this: by(numvisits,patchchoice,summary) numvisits.means<- by(numvisits,list(time=time,patchchoice=patchchoice),mean) numvisits.means barplot(numvisits.means,xlab="Patch Choice",ylab="Number of Visits",col=c("red","darkblue"),beside=T,ylim=c(0,4)) labs<-c("AM","PM") legend(1.09,3.98,labs,fill=cols) and need to add error bars, but i'm unsure as to how to do this.
Hi Sam, Perhaps I should submit a FAQ on this one. Try: bar.err (agricolae) plotCI (gplots) xYplot (Hmisc) error.bars (psych) dispersion (plotrix) plotCI (plotrix) and there are probably others. Jim ______________________________________________ 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.
