Hi
I 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.
Thanks
Sam
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