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\title{Area plot.}
geom_area(mapping = NULL, data = NULL, stat = "identity",
position = "stack", na.rm = FALSE, ...)
\item{mapping}{The aesthetic mapping, usually constructed
with \code{\link{aes}} or \code{\link{aes_string}}. Only
needs to be set at the layer level if you are overriding
the plot defaults.}
\item{data}{A layer specific dataset - only needed if you
want to override the plot defaults.}
\item{stat}{The statistical transformation to use on the
data for this layer.}
\item{position}{The position adjustment to use for
overlappling points on this layer}
\item{na.rm}{If \code{FALSE} (the default), removes
missing values with a warning. If \code{TRUE} silently
removes missing values.}
\item{...}{other arguments passed on to
\code{\link{layer}}. This can include aesthetics whose
values you want to set, not map. See \code{\link{layer}}
for more details.}
An area plot is the continuous analog of a stacked bar
chart (see \code{\link{geom_bar}}), and can be used to
show how composition of the whole varies over the range
of x. Choosing the order in which different components
is stacked is very important, as it becomes increasing
hard to see the individual pattern as you move up the
An area plot is a special case of
\code{\link{geom_ribbon}}, where the minimum of the range
is fixed to 0, and the position adjustment defaults to
# see geom_ribbon
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