File r37/lisp/csl/html/r37_0576.html artifact 111a03bebf part of check-in e08999f63f

<A NAME=augment_columns>

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



<B>AUGMENT_COLUMNS</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>operator</B><P>
<P>
 
Augment columns, stack rows: 
<P>
<P>
 <P> <H3> 
syntax: </H3>
<em>augment_columns</em>(&lt;matrix&gt;,&lt;column\_list&gt;) 
<P>
<P>
<P>
&lt;matrix&gt; :- a matrix. 
<P>
<P>
&lt;column\_list&gt; :- either a positive integer or a list of positive 
 integers. 
<P>
<P>
<em>augment_columns</em>gets hold of the columns of &lt;matrix&gt; 
specified in <em>column_list</em> and sticks them together. 
<P>
<P>
<em>stack_rows</em>performs the same task on rows of &lt;matrix&gt;. 
<P>
<P>
 <P> <H3> 
examples: </H3>
<P><PRE><TT>

augment_columns(A,{1,2}) 

   
  [1  2]
  [    ]
  [4  5]
  [    ]
  [7  8]



stack_rows(A,{1,3}) 

  [1  2  3]
  [       ]
  [7  8  9]

</TT></PRE><P>Related functions: 

<A HREF=r37_0589.html>get_columns</A>, 
<A HREF=r37_0590.html>get_rows</A>, 
<A HREF=r37_0615.html>sub_matrix</A>. 
<P>
<P>