I am starting to use ggplot2. I have some small n (about 30 or so) granular data with lots of overlap. Neither jitter nor alpha (transparency) are suitable. Instead a stripchart with stack and offset do it best but I do not know how to do it in ggplot2. Do you know?
To see what the end result should be click on this graphic.
Here is the script I used a few years ago.
stripchart(SystData$DayTo1Syst~SystData$strain,vertical=TRUE,method="stack",pch=19,offset=.3,xlab="Strain",main="Rapidity of Systemic Disease Onset",ylab="Days post inoculation")