[R] Newbie Question About Histograms

[Eik Vettorazzi]

How about

 > dta<-read.table("clipboard",header=T)
 > means<-aggregate(dta$Length,by=list(YearC=dta$YearC),FUN=mean)
 > barplot(means[,2],names.arg=means[,1])

you may have a look at ?barplot to see (lots of) options for fine tuning 
the plot.

hth.

pfc_ivan schrieb:
> Also I forgot to say that The Y-axis values for each YearC would be the mean
> value of all the Lenghts that happen in that YearC. Basically I cant figure
> out how to put the mean values of Lengths for each YearC on Y axis. 
>
> Thanks in advance!
>