An extensible framework
 for automatically placing direct labels onto multicolor 'lattice' or
 'ggplot2' plots.
 Label positions are described using Positioning Methods
 which can be re-used across several different plots.
 There are heuristics for examining "trellis" and "ggplot" objects
 and inferring an appropriate Positioning Method.
MASS, knitr, markdown, inlinedocs, RColorBrewer, ggplot2 (>=
2.0), rlang, lattice, alphahull, nlme, lars, latticeExtra,
dplyr, ggthemes, testthat
utility.function.R compare.R dotplot.R lineplot.R
densityplot.R ggplot2.R positioning.functions.R doc.R lattice.R
scatterplot.R contourplot.R