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Edit File: grid.polygon.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>R: Draw a Polygon</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <link rel="stylesheet" type="text/css" href="R.css" /> </head><body> <table width="100%" summary="page for grid.polygon {grid}"><tr><td>grid.polygon {grid}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2> Draw a Polygon </h2> <h3>Description</h3> <p>These functions create and draw a polygon. The final point will automatically be connected to the initial point. </p> <h3>Usage</h3> <pre> grid.polygon(x=c(0, 0.5, 1, 0.5), y=c(0.5, 1, 0.5, 0), id=NULL, id.lengths=NULL, default.units="npc", name=NULL, gp=gpar(), draw=TRUE, vp=NULL) polygonGrob(x=c(0, 0.5, 1, 0.5), y=c(0.5, 1, 0.5, 0), id=NULL, id.lengths=NULL, default.units="npc", name=NULL, gp=gpar(), vp=NULL) </pre> <h3>Arguments</h3> <table summary="R argblock"> <tr valign="top"><td><code>x</code></td> <td> <p>A numeric vector or unit object specifying x-locations.</p> </td></tr> <tr valign="top"><td><code>y</code></td> <td> <p>A numeric vector or unit object specifying y-locations.</p> </td></tr> <tr valign="top"><td><code>id</code></td> <td> <p>A numeric vector used to separate locations in <code>x</code> and <code>y</code> into multiple polygons. All locations with the same <code>id</code> belong to the same polygon.</p> </td></tr> <tr valign="top"><td><code>id.lengths</code></td> <td> <p>A numeric vector used to separate locations in <code>x</code> and <code>y</code> into multiple polygons. Specifies consecutive blocks of locations which make up separate polygons.</p> </td></tr> <tr valign="top"><td><code>default.units</code></td> <td> <p>A string indicating the default units to use if <code>x</code>, <code>y</code>, <code>width</code>, or <code>height</code> are only given as numeric vectors.</p> </td></tr> <tr valign="top"><td><code>name</code></td> <td> <p> A character identifier. </p> </td></tr> <tr valign="top"><td><code>gp</code></td> <td> <p>An object of class <code>gpar</code>, typically the output from a call to the function <code>gpar</code>. This is basically a list of graphical parameter settings.</p> </td></tr> <tr valign="top"><td><code>draw</code></td> <td> <p>A logical value indicating whether graphics output should be produced.</p> </td></tr> <tr valign="top"><td><code>vp</code></td> <td> <p>A Grid viewport object (or NULL).</p> </td></tr> </table> <h3>Details</h3> <p>Both functions create a polygon grob (a graphical object describing a polygon), but only <code>grid.polygon</code> draws the polygon (and then only if <code>draw</code> is <code>TRUE</code>). </p> <h3>Value</h3> <p>A grob object. </p> <h3>Author(s)</h3> <p>Paul Murrell</p> <h3>See Also</h3> <p><a href="Grid.html">Grid</a>, <code><a href="viewport.html">viewport</a></code> </p> <h3>Examples</h3> <pre> grid.polygon() # Using id (NOTE: locations are not in consecutive blocks) grid.newpage() grid.polygon(x=c((0:4)/10, rep(.5, 5), (10:6)/10, rep(.5, 5)), y=c(rep(.5, 5), (10:6/10), rep(.5, 5), (0:4)/10), id=rep(1:5, 4), gp=gpar(fill=1:5)) # Using id.lengths grid.newpage() grid.polygon(x=outer(c(0, .5, 1, .5), 5:1/5), y=outer(c(.5, 1, .5, 0), 5:1/5), id.lengths=rep(4, 5), gp=gpar(fill=1:5)) </pre> <hr /><div style="text-align: center;">[Package <em>grid</em> version 3.6.0 <a href="00Index.html">Index</a>]</div> </body></html>