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 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 \name{annotate}\alias{annotate}\title{Create an annotation layer.}\usage{  annotate(geom, x = NULL, y = NULL, xmin = NULL,    xmax = NULL, ymin = NULL, ymax = NULL, ...)}\arguments{  \item{geom}{name of geom to use for annotation}  \item{x,y,xmin,ymin,xmax,ymax}{positionining aesthetics -  you must specify at least one of these.}  \item{...}{other aesthetics. These are not scaled so you  can do (e.g.) \code{colour = "red"} to get a red point.}}\description{  This function adds geoms to a plot. Unlike typical a geom  function, the properties of the geoms are not mapped from  variables of a data frame, but are instead in as vectors.  This is useful for adding small annotations (such as text  labels) or if you have your data in vectors, and for some  reason don't want to put them in a data frame.}\details{  Note that all position aesthetics are scaled (i.e. they  will expand the limits of the plot so they are visible),  but all other aesthetics are set. This means that layers  created with this function will never affect the legend.}\examples{p <- ggplot(mtcars, aes(x = wt, y = mpg)) + geom_point()p + annotate("text", x = 4, y = 25, label = "Some text")p + annotate("text", x = 2:5, y = 25, label = "Some text")p + annotate("rect", xmin = 3, xmax = 4.2, ymin = 12, ymax = 21,  alpha = .2)p + annotate("segment", x = 2.5, xend = 4, y = 15, yend = 25,  colour = "blue")p + annotate("pointrange", x = 3.5, y = 20, ymin = 12, ymax = 28,  colour = "red", size = 1.5)p + annotate("text", x = 2:3, y = 20:21, label = c("my label", "label 2"))}
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