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The initial version of the timeline package has been released to CRAN. This package provides creates timeline plots using ggplot2 in a style similar to Preceden. I would considered this beta quality as there are more features I would like to add but has enough functionality to possibly be useful to others.
install.packages('timeline',repos='http://cran.r-project.org')
require(timeline)
data(ww2)
timeline(ww2, ww2.events, event.spots=2, event.label='', event.above=FALSE)
The ww2 demo (type demo(ww2) at the R console to start) provides many variations of the timeline figure. There is also a Shiny app to explore some of the parameters to the timeline function.
timelineShinyDemo()
Or try the Shiny App from the RStudio Server at http://spark.rstudio.com/jbryer/timeline/.
You can always download the latest development version using devtools.
require(devtools)
install_github('timeline','jbryer')
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