% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/classes.R
\name{CoordPolar}
\alias{CoordPolar}
\title{CoordPolar: polar coordinate system}
\usage{
CoordPolar(theta = "x", start = 0, direction = 1, inner = 0)
}
\arguments{
\item{theta}{Which axis becomes the angle: \code{"x"} (default) or \code{"y"}.}

\item{start}{Angle in radians for normalized position 0 (default: 12
o'clock).}

\item{direction}{\code{1} for clockwise, \code{-1} for counter-clockwise.}

\item{inner}{Inner radius as a fraction of the outer radius (a donut
hole); \code{0} fills to the center.}
}
\value{
An S7 object of class \code{CoordPolar}; usually built by \code{\link[=coord_polar]{coord_polar()}}.
}
\description{
Maps the normalized x axis onto angle and the normalized y axis onto
radius, so lines, areas, and points become circular. This is the engine
behind radar/spider charts, pie-like wedges, and circular bar charts.
}
