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RE: st: RE: Venn diagrams


From   Nick Cox <n.j.cox@durham.ac.uk>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   RE: st: RE: Venn diagrams
Date   Sun, 24 Oct 2010 18:04:42 +0100

If the problem is just cross-combinations of three variables, then -tabplot- (SSC) is another way of showing the same information. Also check out -spineplot- (SJ). 

Nick 
n.j.cox@durham.ac.uk 

David Elliott

Having not been able to connect to Philip's link, I searched for an
alternate tool and discovered Google's charting API which recreated my
previous Venn with the following url code:
http://chart.apis.google.com/chart
   ?chf=bg,s,EFEFEF|c,s,FFFFFF
   &chs=300x225
   &cht=v
   &chco=FFFF42,FF0000,3366CC
   &chd=t:54.2,34.9,32.1,29.6,29.8,23.4,21.9
   &chdl=Alc|Tob|Can
   &chma=10,10,10,10
   &chtt=Alcohol%2C+Tobacco+and+Cannabis+Use
(reconstitute the URL by removing the breaks before the '?' and '&')

The string t:54.2,34.9,32.1,29.6,29.8,23.4,21.9 is simply the data for
the size of the circles followed by the combined proportions in the
following order: A,B,C,AB,AC,BC,ABC

Part of the beauty of this is that one could write a Stata routine to
append the necessary measurements and then shell to a web browser with
the resultant URL string.


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