oordinates to Euclidean</td></tr>
<tr><td width="150"><a href="html/homline.html">homline</a></td><td width="300">create line from 2 points</td></tr>
<tr><td width="150"><a href="html/homtrans.html">homtrans</a></td><td width="300">transform points</td></tr>
<tr><td width="150"><a href="html/ishomog.html">ishomog</a></td><td width="300">true if argument is a 4x4 matrix</td></tr>
<tr><td width="150"><a href="html/ishomog2.html">ishomog2</a></td><td width="300">true if argument is a 4x4 matrix</td></tr>
<tr><