EVOLUTION-MANAGER
Edit File: getGroups.lme.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: Extract lme Object Groups</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 getGroups.lme {nlme}"><tr><td>getGroups.lme {nlme}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Extract lme Object Groups</h2> <h3>Description</h3> <p>The grouping factors corresponding to the linear mixed-effects model represented by <code>object</code> are extracted. If more than one level is indicated in <code>level</code>, the corresponding grouping factors are combined into a data frame; else the selected grouping factor is returned as a vector. </p> <h3>Usage</h3> <pre> ## S3 method for class 'lme' getGroups(object, form, level, data, sep) </pre> <h3>Arguments</h3> <table summary="R argblock"> <tr valign="top"><td><code>object</code></td> <td> <p>an object inheriting from class <code>lme</code>, representing a fitted linear mixed-effects model.</p> </td></tr> <tr valign="top"><td><code>form</code></td> <td> <p>this argument is included to make the method function compatible with the generic and is ignored in this method.</p> </td></tr> <tr valign="top"><td><code>level</code></td> <td> <p>an optional integer vector giving the level(s) of grouping to be extracted from <code>object</code>. Defaults to the highest or innermost level of grouping.</p> </td></tr> <tr valign="top"><td><code>data</code></td> <td> <p>unused</p> </td></tr> <tr valign="top"><td><code>sep</code></td> <td> <p>character, the separator to use between group levels when multiple levels are collapsed. The default is <code>'/'</code>.</p> </td></tr> </table> <h3>Value</h3> <p>either a data frame with columns given by the grouping factors indicated in <code>level</code>, or, when a single level is requested, a factor representing the selected grouping factor. </p> <h3>Author(s)</h3> <p>José Pinheiro and Douglas Bates <a href="mailto:bates@stat.wisc.edu">bates@stat.wisc.edu</a></p> <h3>See Also</h3> <p><code><a href="lme.html">lme</a></code></p> <h3>Examples</h3> <pre> fm1 <- lme(pixel ~ day + day^2, Pixel, random = list(Dog = ~day, Side = ~1)) getGroups(fm1, level = 1:2) </pre> <hr /><div style="text-align: center;">[Package <em>nlme</em> version 3.1-139 <a href="00Index.html">Index</a>]</div> </body></html>