<?xml version="1.0" encoding="utf-8" ?> <!-- for emacs: -*- coding: utf-8 -*- --> <!-- Apache may like this line in the file .htaccess: AddCharset utf-8 .html --> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg-flat.dtd" > <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head><title>columnPermute -- permute some columns</title> <link rel="stylesheet" type="text/css" href="../../../../Macaulay2/Style/doc.css"/> </head> <body> <table class="buttons"> <tr> <td><div><a href="_column__Swap.html">next</a> | <a href="_column__Mult.html">previous</a> | <a href="_column__Swap.html">forward</a> | <a href="_column__Mult.html">backward</a> | up | <a href="index.html">top</a> | <a href="master.html">index</a> | <a href="toc.html">toc</a> | <a href="http://www.math.uiuc.edu/Macaulay2/">Macaulay2 web site</a></div> </td> </tr> </table> <hr/> <div><h1>columnPermute -- permute some columns</h1> <div class="single"><h2>Synopsis</h2> <ul><li><div class="list"><dl class="element"><dt class="heading">Usage: </dt><dd class="value"><div><tt>columnPermute(m,i,{...})</tt></div> </dd></dl> </div> </li> <li><div class="single">Inputs:<ul><li><span><tt>m</tt>, <span>a <a href="___Mutable__Matrix.html">mutable matrix</a></span></span></li> <li><span><tt>i</tt>, <span>an <a href="___Z__Z.html">integer</a></span>, starting column</span></li> <li><span>a list of integers, denoting a permutation of <tt>0..d</tt>, for some number <tt>d</tt></span></li> </ul> </div> </li> <li><div class="single">Consequences:<ul><li>If the permutation is <tt>{p0,p1,...,pd}</tt>, then <tt>m</tt> is modified so that the <tt>i+j</tt> column becomes the <tt>i+pj</tt> column of the original matrix, for <tt>j=0..d</tt></li> </ul> </div> </li> </ul> </div> <div class="single"><h2>Description</h2> <div><table class="examples"><tr><td><pre>i1 : m = mutableMatrix map(ZZ^5,ZZ^6, (i,j) -> 100*i+j) o1 = | . 1 2 3 4 5 | | 100 101 102 103 104 105 | | 200 201 202 203 204 205 | | 300 301 302 303 304 305 | | 400 401 402 403 404 405 | o1 : MutableMatrix</pre> </td></tr> <tr><td><pre>i2 : columnPermute(m,1,{2,0,1}) o2 = | . 3 1 2 4 5 | | 100 103 101 102 104 105 | | 200 203 201 202 204 205 | | 300 303 301 302 304 305 | | 400 403 401 402 404 405 | o2 : MutableMatrix</pre> </td></tr> </table> </div> </div> <div class="single"><h2>See also</h2> <ul><li><span><a href="_mutable_spmatrices.html" title="">mutable matrices</a></span></li> <li><span><a href="_row_spand_spcolumn_spoperations.html" title="">row and column operations</a></span></li> </ul> </div> <div class="waystouse"><h2>Ways to use <tt>columnPermute</tt> :</h2> <ul><li>columnPermute(MutableMatrix,ZZ,List)</li> </ul> </div> </div> </body> </html>