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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: Summarize an nlsList Object</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 summary.nlsList {nlme}"><tr><td>summary.nlsList {nlme}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Summarize an nlsList Object</h2> <h3>Description</h3> <p>The <code>summary</code> function is applied to each <code>nls</code> component of <code>object</code> to produce summary information on the individual fits, which is organized into a list of summary statistics. The returned object is suitable for printing with the <code>print.summary.nlsList</code> method. </p> <h3>Usage</h3> <pre> ## S3 method for class 'nlsList' summary(object, ...) </pre> <h3>Arguments</h3> <table summary="R argblock"> <tr valign="top"><td><code>object</code></td> <td> <p>an object inheriting from class <code>"<a href="nlsList.html">nlsList</a>"</code>, representing a list of <code>nls</code> fitted objects. </p> </td></tr> <tr valign="top"><td><code>...</code></td> <td> <p>optional arguments to the <code>summary.lmList</code> method. One such optional argument is <code>pool</code>, a logical value indicating whether a pooled estimate of the residual standard error should be used. Default is <code>attr(object, "pool")</code>. </p> </td></tr> </table> <h3>Value</h3> <p>a list with summary statistics obtained by applying <code>summary</code> to the elements of <code>object</code>, inheriting from class <code>summary.nlsList</code>. The components of <code>value</code> are: </p> <table summary="R valueblock"> <tr valign="top"><td><code>call</code></td> <td> <p>a list containing an image of the <code>nlsList</code> call that produced <code>object</code>. </p> </td></tr> <tr valign="top"><td><code>parameters</code></td> <td> <p>a three dimensional array with summary information on the <code>nls</code> coefficients. The first dimension corresponds to the names of the <code>object</code> components, the second dimension is given by <code>"Value"</code>, <code>"Std. Error"</code>, <code>"t value"</code>, and <code>"Pr(>|t|)"</code>, corresponding, respectively, to the coefficient estimates and their associated standard errors, t-values, and p-values. The third dimension is given by the coefficients names. </p> </td></tr> <tr valign="top"><td><code>correlation</code></td> <td> <p>a three dimensional array with the correlations between the individual <code>nls</code> coefficient estimates. The first dimension corresponds to the names of the <code>object</code> components. The third dimension is given by the coefficients names. For each coefficient, the rows of the associated array give the correlations between that coefficient and the remaining coefficients, by <code>nls</code> component. </p> </td></tr> <tr valign="top"><td><code>cov.unscaled</code></td> <td> <p>a three dimensional array with the unscaled variances/covariances for the individual <code>lm</code> coefficient estimates (giving the estimated variance/covariance for the coefficients, when multiplied by the estimated residual errors). The first dimension corresponds to the names of the <code>object</code> components. The third dimension is given by the coefficients names. For each coefficient, the rows of the associated array give the unscaled covariances between that coefficient and the remaining coefficients, by <code>nls</code> component. </p> </td></tr> <tr valign="top"><td><code>df</code></td> <td> <p>an array with the number of degrees of freedom for the model and for residuals, for each <code>nls</code> component. </p> </td></tr> <tr valign="top"><td><code>df.residual</code></td> <td> <p>the total number of degrees of freedom for residuals, corresponding to the sum of residuals df of all <code>nls</code> components. </p> </td></tr> <tr valign="top"><td><code>pool</code></td> <td> <p>the value of the <code>pool</code> argument to the function. </p> </td></tr> <tr valign="top"><td><code>RSE</code></td> <td> <p>the pooled estimate of the residual standard error.</p> </td></tr> <tr valign="top"><td><code>sigma</code></td> <td> <p>a vector with the residual standard error estimates for the individual <code>lm</code> fits. </p> </td></tr> </table> <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="nlsList.html">nlsList</a></code>, <code><a href="../../base/html/summary.html">summary</a></code></p> <h3>Examples</h3> <pre> fm1 <- nlsList(SSasymp, Loblolly) summary(fm1) </pre> <hr /><div style="text-align: center;">[Package <em>nlme</em> version 3.1-139 <a href="00Index.html">Index</a>]</div> </body></html>