[R] bwplot with pch = "|"

[Duncan Mackay]

Dear All

Below is a toy example of a modified standard bwplot.

require(lattice)
DF <-
data.frame(site = rep(1:5, each = 20),
            height = rnorm(100))

bwplot(site ~ height,DF,
pch = "|",
par.settings = list(strip.background = list(col = "transparent"),
   box.rectangle = list(col = "grey70",lty = 1),
   box.umbrella = list(col = "grey70",lty = 1),
   plot.symbol = list(alpha = 1,col = "grey70",cex = 1,pch = 20),
   superpose.symbol = list(cex = rep(0.7, 7),col = "black", pch = rep(20,7)))
)

The help guide shows that pch = "|" is a special case.
This give me a line across the box which is what I want but how do I 
make it thicker and red.

Regards

Duncan Mackay
Department of Agronomy and Soil Science
University of New England
ARMIDALE NSW 2351
Email home: mackay at northnet.com.au