[R] labelling a stacked barchart (lattice)

[M/K Zodet]

All:

Below is my code for creating a basic horizontal, stacked barchart.  I'd like to label the plot in two ways:  1) place the x values in each piece and 2) place the y values above each piece (angled).  I'm currently using lattice, but I'm open to suggestions using ggplot2.

Questions:

1.  Can this be done?...I assume yes.  So, what are the best options/functions for doing this.
2.  Is there a way to alter the transparency of the bar fill with the brewer palette?  I know I can alter this w/ heat.~, topo.~, cm.colors, etc.

Thanks in advance.

Marc
Using R for Mac OS X GUI 1.40-devel Leopard build 64-bit


dta <- data.frame(x=c(46.0, 14.7, 16.4, 15.8, 7.0), y=c("Back", "Neck", "Extrem", "MuscSkel", "Oth"))
dta
barchart(data=dta, ~x, group=y, stack=T, col=sort(brewer.pal(7,"Purples")),
         xlab="Percent", box.width=.5, scales=list(tick.number=10))