s="codeinput">
showIm(mkSquare(sz,per,dir,ampl,ph,orig,twidth));
</pre>
<img vspace="5" hspace="5" src="HTML/matlabPyrTools_11.png" alt=""> 
<pre class="codeinput">
showIm(mkFract(sz,expt));
</pre>
<img vspace="5" hspace="5" src="HTML/matlabPyrTools_12.png" alt=""> 
<h2>Point operations (lookup tables):<a name="9"></a></h2><pre class="codeinput">[Xtbl,Ytbl] = rcosFn(20, 25, [-1 1]);
plot(Xtbl,Ytbl);
showIm(pointOp(mkR(100,1,[70,30]), Ytbl, Xtbl(1), Xtbl(2)-Xtbl(1), 0));
</pre>
<img vspace="5" hspace="5" src