EVOLUTION-MANAGER

Edit File: coord_polar.html

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<table width="100%" summary="page for coord_polar {ggplot2}"><tr><td>coord_polar {ggplot2}</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Polar coordinates</h2>

<h3>Description</h3>

<p>The polar coordinate system is most commonly used for pie charts, which
are a stacked bar chart in polar coordinates.
</p>

<h3>Usage</h3>

<pre>
coord_polar(theta = "x", start = 0, direction = 1, clip = "on")
</pre>

<h3>Arguments</h3>

<table summary="R argblock">
<tr valign="top"><td><code>theta</code></td>
<td>
<p>variable to map angle to (<code>x</code> or <code>y</code>)</p>
</td></tr>
<tr valign="top"><td><code>start</code></td>
<td>
<p>Offset of starting point from 12 o'clock in radians. Offset
is applied clockwise or anticlockwise depending on value of <code>direction</code>.</p>
</td></tr>
<tr valign="top"><td><code>direction</code></td>
<td>
<p>1, clockwise; -1, anticlockwise</p>
</td></tr>
<tr valign="top"><td><code>clip</code></td>
<td>
<p>Should drawing be clipped to the extent of the plot panel? A
setting of <code>"on"</code> (the default) means yes, and a setting of <code>"off"</code>
means no. For details, please see <code><a href="coord_cartesian.html">coord_cartesian()</a></code>.</p>
</td></tr>
</table>

<h3>Examples</h3>

<pre>
# NOTE: Use these plots with caution - polar coordinates has
# major perceptual problems.  The main point of these examples is
# to demonstrate how these common plots can be described in the
# grammar.  Use with EXTREME caution.

#' # A pie chart = stacked bar chart + polar coordinates
pie &lt;- ggplot(mtcars, aes(x = factor(1), fill = factor(cyl))) +
 geom_bar(width = 1)
pie + coord_polar(theta = "y")

# A coxcomb plot = bar chart + polar coordinates
cxc &lt;- ggplot(mtcars, aes(x = factor(cyl))) +
  geom_bar(width = 1, colour = "black")
cxc + coord_polar()
# A new type of plot?
cxc + coord_polar(theta = "y")

# The bullseye chart
pie + coord_polar()

# Hadley's favourite pie chart
df &lt;- data.frame(
  variable = c("does not resemble", "resembles"),
  value = c(20, 80)
)
ggplot(df, aes(x = "", y = value, fill = variable)) +
  geom_col(width = 1) +
  scale_fill_manual(values = c("red", "yellow")) +
  coord_polar("y", start = pi / 3) +
  labs(title = "Pac man")

# Windrose + doughnut plot
if (require("ggplot2movies")) {
movies$rrating &lt;- cut_interval(movies$rating, length = 1)
movies$budgetq &lt;- cut_number(movies$budget, 4)

doh &lt;- ggplot(movies, aes(x = rrating, fill = budgetq))

# Wind rose
doh + geom_bar(width = 1) + coord_polar()
# Race track plot
doh + geom_bar(width = 0.9, position = "fill") + coord_polar(theta = "y")
}

</pre>

<hr /><div style="text-align: center;">[Package <em>ggplot2</em> version 3.3.2 <a href="00Index.html">Index</a>]</div>
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