[R] annotate histogram

[Wendy]

Hi all,

I want to make a histogram like the one show 
http://nar.oxfordjournals.org/content/39/suppl_1/D1011/F1.expansion.html
here , but I did not figure out how to add the red marks at the bottom of
the bars. Could anybody help? Thank you very much

--
View this message in context: http://r.789695.n4.nabble.com/annotate-histogram-tp3963960p3963960.html
Sent from the R help mailing list archive at Nabble.com.