File r37/lisp/csl/html/r37_0608.html artifact 2cfce9e1a9 part of check-in e1a8550313

<A NAME=remove_columns>

<TITLE>remove_columns</TITLE></A>
<b><a href=r37_idx.html>INDEX</a></b><p><p>



<B>REMOVE_COLUMNS</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>operator</B><P>
<P>
 
Remove columns, remove rows: 
<P>
<P>
 <P> <H3> 
syntax: </H3>
<em>remove_columns</em>(&lt;matrix&gt;,&lt;column\_list&gt;) 
<P>
<P>
<P>
&lt;matrix&gt; :- a 
<A HREF=r37_0345.html>matrix</A>. 
&lt;column\_list&gt; :- either a positive integer or a list of positive 
 integers. 
<P>
<P>
<em>remove_columns</em>removes the columns specified in 
&lt;column\_list&gt; from &lt;matrix&gt;. 
<P>
<P>
<em>remove_rows</em>performs the same task on the rows of &lt;matrix&gt;. 
<P>
<P>
 <P> <H3> 
examples: </H3>
<P><PRE><TT> 

remove_columns(A,2); 

  [1  3]
  [    ]
  [4  6]
  [    ]
  [7  9]



remove_rows(A,{1,3}); 

  [4  5  6]

</TT></PRE><P>Related functions: 
<A HREF=r37_0602.html>minor</A>. 
<P>
<P>