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From: bcphyagi@csunb.csun.edu (Stephen Walton)
Newsgroups: comp.sys.amiga.advocacy
Subject: Contour plotting
Message-ID: <1991Feb27.194218.12227@csun.edu>
Date: 27 Feb 91 19:42:18 GMT
Sender: news@csun.edu (News Administrator)
Organization: csun
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Well, I went to try and generate a contour plot of a 512 by 512 real
data set the other week on the MS/DOS machines we have at our observatory.
Using the demo version of this "wonderful, beautiful, powerful" program
called GRAFTOOL for MS/DOS (which has received rave reviews) I had to:
1) generate a 3-d plot of the image (1 hour) and 2) ask the program to
generate the contour plot (another hour+, I haven't had the patience to
run it to completion).  This is on a _20 MHz_ 386 machine!

To do the same thing on my good old Amiga 2000 (no FPU, 7 MHz 68000),
I malloc'ed a 512 by 512 float array and called Tony Richardson's
plcont() routine from his PLPLOT library.  Total time for generating
the plot was less than 5 minutes.  It is less than 1 minute on a 3000.

Just thought y'all would like to know this.
--
Stephen R. Walton, Dept. of Physics and Astronomy, Cal State Northridge
bcphyagi@csunb.csun.edu until my Suns come back up