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<!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: Plot Ridge Functions for Projection Pursuit Regression Fit</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 plot.ppr {stats}"><tr><td>plot.ppr {stats}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Plot Ridge Functions for Projection Pursuit Regression Fit</h2> <h3>Description</h3> <p>Plot the ridge functions for a projection pursuit regression (<code><a href="ppr.html">ppr</a></code>) fit. </p> <h3>Usage</h3> <pre> ## S3 method for class 'ppr' plot(x, ask, type = "o", cex = 1/2, main = quote(bquote( "term"[.(i)]*":" ~~ hat(beta[.(i)]) == .(bet.i))), xlab = quote(bquote(bold(alpha)[.(i)]^T * bold(x))), ylab = "", ...) </pre> <h3>Arguments</h3> <table summary="R argblock"> <tr valign="top"><td><code>x</code></td> <td> <p>an <span style="font-family: Courier New, Courier; color: #666666;"><b>R</b></span> object of class <code>"ppr"</code> as produced by a call to <code>ppr</code>.</p> </td></tr> <tr valign="top"><td><code>ask</code></td> <td> <p>the graphics parameter <code>ask</code>: see <code><a href="../../graphics/html/par.html">par</a></code> for details. If set to <code>TRUE</code> will ask between the plot of each cross-section. </p> </td></tr> <tr valign="top"><td><code>type</code></td> <td> <p>the type of line (see <code><a href="../../graphics/html/plot.default.html">plot.default</a></code>) to draw.</p> </td></tr> <tr valign="top"><td><code>cex</code></td> <td> <p>plot symbol expansion factor (<em>relative</em> to <code><a href="../../graphics/html/par.html">par</a>("cex")</code>).</p> </td></tr> <tr valign="top"><td><code>main, xlab, ylab</code></td> <td> <p>axis annotations, see also <code><a href="../../graphics/html/title.html">title</a></code>. Can be an expression (depending on <code>i</code> and <code>bet.i</code>), as by default which will be <code>eval()</code>uated.</p> </td></tr> <tr valign="top"><td><code>...</code></td> <td> <p>further graphical parameters, passed to <code><a href="../../graphics/html/plot.html">plot</a>()</code>.</p> </td></tr> </table> <h3>Value</h3> <p>None </p> <h3>Side Effects</h3> <p>A series of plots are drawn on the current graphical device, one for each term in the fit. </p> <h3>See Also</h3> <p><code><a href="ppr.html">ppr</a></code>, <code><a href="../../graphics/html/par.html">par</a></code> </p> <h3>Examples</h3> <pre> require(graphics) rock1 <- within(rock, { area1 <- area/10000; peri1 <- peri/10000 }) par(mfrow = c(3,2)) # maybe: , pty = "s" rock.ppr <- ppr(log(perm) ~ area1 + peri1 + shape, data = rock1, nterms = 2, max.terms = 5) plot(rock.ppr, main = "ppr(log(perm)~ ., nterms=2, max.terms=5)") plot(update(rock.ppr, bass = 5), main = "update(..., bass = 5)") plot(update(rock.ppr, sm.method = "gcv", gcvpen = 2), main = "update(..., sm.method=\"gcv\", gcvpen=2)") </pre> <hr /><div style="text-align: center;">[Package <em>stats</em> version 3.6.0 <a href="00Index.html">Index</a>]</div> </body></html>