EVOLUTION-MANAGER
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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: Augment data with information from a(n) htest 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 augment.htest {broom}"><tr><td>augment.htest {broom}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Augment data with information from a(n) htest object</h2> <h3>Description</h3> <p>Augment accepts a model object and a dataset and adds information about each observation in the dataset. Most commonly, this includes predicted values in the <code>.fitted</code> column, residuals in the <code>.resid</code> column, and standard errors for the fitted values in a <code>.se.fit</code> column. New columns always begin with a <code>.</code> prefix to avoid overwriting columns in the original dataset. </p> <p>Users may pass data to augment via either the <code>data</code> argument or the <code>newdata</code> argument. If the user passes data to the <code>data</code> argument, it <strong>must</strong> be exactly the data that was used to fit the model object. Pass datasets to <code>newdata</code> to augment data that was not used during model fitting. This still requires that all columns used to fit the model are present. </p> <p>Augment will often behave differently depending on whether <code>data</code> or <code>newdata</code> is given. This is because there is often information associated with training observations (such as influences or related) measures that is not meaningfully defined for new observations. </p> <p>For convenience, many augment methods provide default <code>data</code> arguments, so that <code>augment(fit)</code> will return the augmented training data. In these cases, augment tries to reconstruct the original data based on the model object with varying degrees of success. </p> <p>The augmented dataset is always returned as a <a href="../../tibble/html/tibble.html">tibble::tibble</a> with the <strong>same number of rows</strong> as the passed dataset. This means that the passed data must be coercible to a tibble. At this time, tibbles do not support matrix-columns. This means you should not specify a matrix of covariates in a model formula during the original model fitting process, and that <code><a href="../../splines/html/ns.html">splines::ns()</a></code>, <code><a href="../../stats/html/poly.html">stats::poly()</a></code> and <code><a href="../../survival/html/Surv.html">survival::Surv()</a></code> objects are not supported in input data. If you encounter errors, try explicitly passing a tibble, or fitting the original model on data in a tibble. </p> <p>We are in the process of defining behaviors for models fit with various <code>na.action</code> arguments, but make no guarantees about behavior when data is missing at this time. </p> <h3>Usage</h3> <pre> ## S3 method for class 'htest' augment(x, ...) </pre> <h3>Arguments</h3> <table summary="R argblock"> <tr valign="top"><td><code>x</code></td> <td> <p>An <code>htest</code> objected, such as those created by <code><a href="../../stats/html/cor.test.html">stats::cor.test()</a></code>, <code><a href="../../stats/html/t.test.html">stats::t.test()</a></code>, <code><a href="../../stats/html/wilcox.test.html">stats::wilcox.test()</a></code>, <code><a href="../../stats/html/chisq.test.html">stats::chisq.test()</a></code>, etc.</p> </td></tr> <tr valign="top"><td><code>...</code></td> <td> <p>Additional arguments. Not used. Needed to match generic signature only. <strong>Cautionary note:</strong> Misspelled arguments will be absorbed in <code>...</code>, where they will be ignored. If the misspelled argument has a default value, the default value will be used. For example, if you pass <code>conf.lvel = 0.9</code>, all computation will proceed using <code>conf.level = 0.95</code>. Additionally, if you pass <code>newdata = my_tibble</code> to an <code><a href="reexports.html">augment()</a></code> method that does not accept a <code>newdata</code> argument, it will use the default value for the <code>data</code> argument.</p> </td></tr> </table> <h3>Details</h3> <p>See <code><a href="../../stats/html/chisq.test.html">stats::chisq.test()</a></code> for more details on how residuals are computed. </p> <h3>Value</h3> <p>A <code><a href="../../tibble/html/tibble.html">tibble::tibble()</a></code> with exactly one row and columns: </p> <table summary="R valueblock"> <tr valign="top"><td><code>.observed</code></td> <td> <p>Observed count.</p> </td></tr> <tr valign="top"><td><code>.prop</code></td> <td> <p>Proportion of the total.</p> </td></tr> <tr valign="top"><td><code>.row.prop</code></td> <td> <p>Row proportion (2 dimensions table only).</p> </td></tr> <tr valign="top"><td><code>.col.prop</code></td> <td> <p>Column proportion (2 dimensions table only).</p> </td></tr> <tr valign="top"><td><code>.expected</code></td> <td> <p>Expected count under the null hypothesis.</p> </td></tr> <tr valign="top"><td><code>.resid</code></td> <td> <p>Pearson residuals.</p> </td></tr> <tr valign="top"><td><code>.std.resid</code></td> <td> <p>Standardized residual.</p> </td></tr> </table> <h3>See Also</h3> <p><code><a href="reexports.html">augment()</a></code>, <code><a href="../../stats/html/chisq.test.html">stats::chisq.test()</a></code> </p> <p>Other htest tidiers: <code><a href="tidy.htest.html">tidy.htest</a>()</code>, <code><a href="tidy.pairwise.htest.html">tidy.pairwise.htest</a>()</code>, <code><a href="tidy.power.htest.html">tidy.power.htest</a>()</code> </p> <h3>Examples</h3> <pre> tt <- t.test(rnorm(10)) tidy(tt) glance(tt) # same output for all htests tt <- t.test(mpg ~ am, data = mtcars) tidy(tt) wt <- wilcox.test(mpg ~ am, data = mtcars, conf.int = TRUE, exact = FALSE) tidy(wt) ct <- cor.test(mtcars$wt, mtcars$mpg) tidy(ct) chit <- chisq.test(xtabs(Freq ~ Sex + Class, data = as.data.frame(Titanic))) tidy(chit) augment(chit) </pre> <hr /><div style="text-align: center;">[Package <em>broom</em> version 0.7.0 <a href="00Index.html">Index</a>]</div> </body></html>