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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: Add new columns in specified position.</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 gtable_add_cols {gtable}"><tr><td>gtable_add_cols {gtable}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Add new columns in specified position.</h2> <h3>Description</h3> <p>Insert new columns in a gtable and adjust the grob placement accordingly. If columns are added in the middle of a grob spanning multiple columns, the grob will continue to span them all. If a column is added to the left or right of a grob, the grob will not span the new column(s). </p> <h3>Usage</h3> <pre> gtable_add_cols(x, widths, pos = -1) </pre> <h3>Arguments</h3> <table summary="R argblock"> <tr valign="top"><td><code>x</code></td> <td> <p>a <code><a href="gtable.html">gtable()</a></code> object</p> </td></tr> <tr valign="top"><td><code>widths</code></td> <td> <p>a unit vector giving the widths of the new columns</p> </td></tr> <tr valign="top"><td><code>pos</code></td> <td> <p>new columns will be added to the right of this position. Defaults to adding col on right. <code>0</code> adds on the left.</p> </td></tr> </table> <h3>Value</h3> <p>A gtable with the new columns added. </p> <h3>See Also</h3> <p>Other gtable manipulation: <code><a href="gtable_add_grob.html">gtable_add_grob</a></code>, <code><a href="gtable_add_padding.html">gtable_add_padding</a></code>, <code><a href="gtable_add_rows.html">gtable_add_rows</a></code>, <code><a href="gtable_add_space.html">gtable_add_space</a></code>, <code><a href="gtable_filter.html">gtable_filter</a></code> </p> <h3>Examples</h3> <pre> library(grid) rect <- rectGrob(gp = gpar(fill = "#00000080")) tab <- gtable(unit(rep(1, 3), "null"), unit(rep(1, 3), "null")) tab <- gtable_add_grob(tab, rect, t = 1, l = 1, r = 3) tab <- gtable_add_grob(tab, rect, t = 1, b = 3, l = 1) tab <- gtable_add_grob(tab, rect, t = 1, b = 3, l = 3) dim(tab) plot(tab) # Grobs will continue to span over new rows if added in the middle tab2 <- gtable_add_cols(tab, unit(1, "null"), 1) dim(tab2) plot(tab2) # But not when added to left (0) or right (-1, the default) tab3 <- gtable_add_cols(tab, unit(1, "null")) tab3 <- gtable_add_cols(tab3, unit(1, "null"), 0) dim(tab3) plot(tab3) </pre> <hr /><div style="text-align: center;">[Package <em>gtable</em> version 0.3.0 <a href="00Index.html">Index</a>]</div> </body></html>