At Tue, 23 Oct 2007 17:05:48 -0600, Kevin Jackman wrote: > > Thanks for the info about the quadpack book. I should definitely get that. > Any suggestions on where? It's out of print so you'd have to get it via a library or abe.com -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/