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In article <1992May1.054253.7427@cc.uow.edu.au> ciufo@cc.uow.edu.au (philip ciufo) writes:
>I am seeking a PC software package for complex technical graphs.
>I would like an easy to use package and relatively moderately
>priced. Data input should be available from a simple text file.
>3D contour plotting, linear and log scales , as well as curve fitting
>is also required. If anyone knows of such a package, could they please 
>send me an e_mail
>
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>| Department of Electrical and Computer Engineering                     |
>| University of Wollongong, PO Box 1144,                                | 
>| Wollongong, NSW 2500, Australia                                       |
>| email:p.ciufo@uow.edu.au, Ph:+61 42 213 414, Fax:+61 42 213 236       |
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My personal choice is CoPlot.   I have found it far more flexible than
Grapher/ Surfer, SYSTAT, GAUSS, etc.   It costs US$159 + postage from:
     CoHort Software
     PO Box 1149
     Berkeley, CA 94701, USA
Phone: (+1) 415-524-9878    Fax: (+1) 415-524-9199

I notice that Philip requires log scales.   This is an area in which many
packages are very poor.   They nearly all offer log scales, but what you
usually get is a range say from 1 to a power of 10.   I recently had an
example in which I wanted a range from 3 to 12.   Many packages force you
to accept 1 to 100 so that the part of interest in the figure is only in
a small part of the range.   CoPlot will give you ranges which do not start
and end on integer powers of 10.

There are parallel packages CoDraw and CoStat from the same company.

-- 
Alan Miller, Quality Improvement Project
CSIRO Division of Mathematics & Statistics, Melbourne, Australia
Phone: +61 3 542-2266   Fax: +61 3 543-6613  E-mail: alan@mel.dms.csiro.au
Mail: CSIRO DMS, Private Bag 10, Clayton, Vic. 3168, Australia