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From: luke@umnstat.UUCP (Luke Tierney)
Newsgroups: net.math.stat
Subject: scatterplot brushing on the macintosh
Message-ID: <231@umnstat.UUCP>
Date: Tue, 21-Jan-86 08:00:33 EST
Article-I.D.: umnstat.231
Posted: Tue Jan 21 08:00:33 1986
Date-Received: Thu, 23-Jan-86 20:10:31 EST
Distribution: net
Organization: Statistics, U. of Minn, Mpls, MN
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I have written a simple program for brushing a scatterplot matrix on
the mac (See for example W. S. Chambers, "The Elements of Graphing
Data" for a description of this interactive graphical technique). The
program was written in sumacc C, so source is available. Since this is
of limited interest to the net as a whole I am just posting this
notice rather than the program itself.  If you would like a copy
please send a macintosh disc and a self-addressed stamped envelope to

Luke Tierney
School of Statistics
University of Minnesota
Minneapolis, Mn. 55455

[e-mail: ...ihnp4!umn-cs!umnstat!like]

Please indicate whether you would like a copy of the source as well.

I have also written a program for doing perspective plots (as in the S
function persp) localy on the mac - no line hiding but relatively fast
redrawing to allow you to easily look at a function of two variables
from a number of different angles.  A picture using a 20 x 20 grid is
redrawn in about 2 seconds. 

Luke Tierney