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76 lines
2.8 KiB
76 lines
2.8 KiB
% Generated by roxygen2: do not edit by hand
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% Please edit documentation in R/geom_col.r
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\name{geom_col}
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\alias{geom_col}
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\title{Bars, rectangles with bases on x-axis but with "identity" as the
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default "stat"}
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\usage{
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geom_col(mapping = NULL, data = NULL, position = "stack", ...,
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width = NULL, na.rm = FALSE, show.legend = NA, inherit.aes = TRUE)
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}
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\arguments{
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\item{mapping}{Set of aesthetic mappings created by \code{\link{aes}} or
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\code{\link{aes_}}. If specified and \code{inherit.aes = TRUE} (the
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default), it is combined with the default mapping at the top level of the
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plot. You must supply \code{mapping} if there is no plot mapping.}
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\item{data}{The data to be displayed in this layer. There are three
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options:
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If \code{NULL}, the default, the data is inherited from the plot
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data as specified in the call to \code{\link{ggplot}}.
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A \code{data.frame}, or other object, will override the plot
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data. All objects will be fortified to produce a data frame. See
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\code{\link{fortify}} for which variables will be created.
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A \code{function} will be called with a single argument,
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the plot data. The return value must be a \code{data.frame.}, and
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will be used as the layer data.}
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\item{position}{Position adjustment, either as a string, or the result of
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a call to a position adjustment function.}
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\item{...}{other arguments passed on to \code{\link{layer}}. These are
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often aesthetics, used to set an aesthetic to a fixed value, like
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\code{color = "red"} or \code{size = 3}. They may also be parameters
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to the paired geom/stat.}
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\item{width}{Bar width. By default, set to 90\% of the resolution of the data.}
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\item{na.rm}{If \code{FALSE} (the default), removes missing values with
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a warning. If \code{TRUE} silently removes missing values.}
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\item{show.legend}{logical. Should this layer be included in the legends?
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\code{NA}, the default, includes if any aesthetics are mapped.
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\code{FALSE} never includes, and \code{TRUE} always includes.}
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\item{inherit.aes}{If \code{FALSE}, overrides the default aesthetics,
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rather than combining with them. This is most useful for helper functions
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that define both data and aesthetics and shouldn't inherit behaviour from
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the default plot specification, e.g. \code{\link{borders}}.}
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}
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\description{
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This is an alternative to \code{geom_bar} for making bar charts,
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It uses \code{stat="identity"} which requires you to map a variable to
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the \code{y} aesthetic. There is no option to use another "stat".
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}
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\section{Aesthetics}{
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\code{geom_col} understands the following aesthetics (required aesthetics
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are in bold):
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\itemize{
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\item \strong{\code{x}}
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\item \strong{\code{y}}
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\item \code{alpha}
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\item \code{color}
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\item \code{fill}
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\item \code{linetype}
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\item \code{size}
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}
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}
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\examples{
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df <- data.frame(trt = c("a", "b", "c"), outcome = c(2.3, 1.9, 3.2))
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ggplot(df, aes(trt, outcome)) + geom_col()
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}
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