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Joseph,
the ovbd_illustrator.do file sets the -seed- in a manner that makes it
incompatible with Stata 10. At least I can only make the line
set seed `=date("2007-02-27", "ymd")'
run by setting -vers 9-. For 10, I have to switch to
set seed `=date("2007-02-27", "YMD")'
HTH
Martin
_______________________
----- Original Message -----
From: "Joseph Coveney" <[email protected]>
To: <[email protected]>
Sent: Sunday, June 14, 2009 6:22 AM
Subject: st: RE: generating correlated binary data
David Airey wrote:
What is the easiest way of generating correlated binary data (greater
than 2 observations per cluster) in Stata?
I am trying to download this paper:
Al-Osh and Lee (2001) A simple approach for generating correlated
binary variates. J. Statist. Comput. Simul. Vol. 70, pp. 231-255.
--------------------------------------------------------------------------------
You can download -ovbd- from SSC to generate correlated binary data with
two or
more observations per cluster. You'll also need to have another
user-written
command installed, -ridder-, which is called by -ovbd-.
The syntax for -ovbd- is directly analogous to that of -drawnorm-, except
for
the -sd()- option, of course. For the same reason, there are constraints
on
what you can specify for a combination of mean vector and correlation
matrix.
Joseph Coveney
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