From:	"James R. Phillips" <mandalay AT japan DOT co DOT jp>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: allegro for "scientific" programming?
Date:	Sat, 24 May 1997 07:48:52 +0900
Organization:	FredNet - Frederick, Md.
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Message-ID:	<33861ED4.580E@japan.co.jp>
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Well, I wrote a multiple regression program for 3D XYZ data sets, and
used Allegro to plot and rotate the polynomial surfaces with the 3D
XYZ data sets on them.  Rotates and zooms in/out really fast.  Right
now I'm using z-depth sorting out of laziness, but will switch to the
painter's algorithm in the future.  I used the NEWMAT09 matrix library's
QR triangularization routines to solve the linear equation matrices,
it is an excellent matrix library.  You can select and de-select
any polynomial coefficients for the fitting with the handy-dandy
Allegro dialog controls, this makes the fitting interactive and is
really great to use.  Not finished yet, probably will tinker with
this for years.  At least I hope so...

                                Randy Phillips
                                Senior Engineer
                                Honeywell Measurex Japan, Tokyo

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