/h3>
<dl>
<dt> <kbd>filter 100 100</kbd>
<dd> apply a simple cut-off filter to data in the <b>r</b> array.<p>
<dt> <kbd>filter 100 100 90. gauss</kbd>
<dd> apply a gaussian filter of width 90 and cutoff 100 to data in the 
     <b>r</b> array. The first and last 100 points of the data are masked
     with a cosine bell.<p>
</dl>

<h3>Related commands:</h3>
<menu>
<li><a href="fourtran.html"> fourtran </a>
</menu>
 
</body>


