examples can be found in <tt>$ROOTSYS/tutorials/hist/</tt>:
<p>
<center><img src="th2polyBoxes.gif"     alt="th2polyBoses.C"/></center>
<center><img src="th2polyEurope.gif"    alt="th2polyEurope.C"/></center>
<center><img src="th2polyHoneycomb.gif" alt="th2polyHonecomb.C"/></center>
<center><img src="th2polyUSA.gif"       alt="th2polyUSA.C"/></center>



