Hi

BJ wrote:
Basically, i want to create a boxplot from population data, with a solid line for the median, and then a dotted line for a specific persons value. Is there a way to artificially introduce another line or mark of some kind in a box plot? Thanks again for all of yoru help. Hopefully soon I wont have to keep bugging you all. ~Erithid :-p


Do you mean something like this ... ?

with(ToothGrowth,
     {
       boxplot(len ~ supp)
       # boxplots horizontally centred at 1 and 2
       # 0.6, 1.4 come from default boxwex of 0.8
       #   (1 +/- boxwex/2)
       # 18 I made up
       lines(c(0.6, 1.4), c(18, 18),
             lty="dashed", col="red")
     })

Paul
--
Dr Paul Murrell
Department of Statistics
The University of Auckland
Private Bag 92019
Auckland
New Zealand
64 9 3737599 x85392
[EMAIL PROTECTED]
http://www.stat.auckland.ac.nz/~paul/

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