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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: Useful panel function with qqmath</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 F_2_panel.qqmathline {lattice}"><tr><td>F_2_panel.qqmathline {lattice}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Useful panel function with qqmath</h2> <h3>Description</h3> <p>Useful panel function with qqmath. Draws a line passing through the points (usually) determined by the .25 and .75 quantiles of the sample and the theoretical distribution. </p> <h3>Usage</h3> <pre> panel.qqmathline(x, y = x, distribution = qnorm, probs = c(0.25, 0.75), qtype = 7, groups = NULL, ..., identifier = "qqmathline") </pre> <h3>Arguments</h3> <table summary="R argblock"> <tr valign="top"><td><code>x</code></td> <td> <p> The original sample, possibly reduced to a fewer number of quantiles, as determined by the <code>f.value</code> argument to <code>qqmath</code> </p> </td></tr> <tr valign="top"><td><code>y</code></td> <td> <p>an alias for <code>x</code> for backwards compatibility </p> </td></tr> <tr valign="top"><td><code>distribution</code></td> <td> <p>quantile function for reference theoretical distribution. </p> </td></tr> <tr valign="top"><td><code>probs</code></td> <td> <p>numeric vector of length two, representing probabilities. Corresponding quantile pairs define the line drawn. </p> </td></tr> <tr valign="top"><td><code>qtype</code></td> <td> <p>the <code>type</code> of quantile computation used in <code><a href="../../stats/html/quantile.html">quantile</a></code> </p> </td></tr> <tr valign="top"><td><code>groups</code></td> <td> <p>optional grouping variable. If non-null, a line will be drawn for each group. </p> </td></tr> <tr valign="top"><td><code>...</code></td> <td> <p>other arguments.</p> </td></tr> <tr valign="top"><td><code>identifier</code></td> <td> <p>A character string that is prepended to the names of grobs that are created by this panel function. </p> </td></tr> </table> <h3>Author(s)</h3> <p>Deepayan Sarkar <a href="mailto:Deepayan.Sarkar@R-project.org">Deepayan.Sarkar@R-project.org</a></p> <h3>See Also</h3> <p><code><a href="prepanel.functions.html">prepanel.qqmathline</a></code>, <code><a href="qqmath.html">qqmath</a></code>, <code><a href="../../stats/html/quantile.html">quantile</a></code> </p> <hr /><div style="text-align: center;">[Package <em>lattice</em> version 0.20-38 <a href="00Index.html">Index</a>]</div> </body></html>