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Re: st: querying format for programming


From   "E. Paul Wileyto" <epw@mail.med.upenn.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: querying format for programming
Date   Thu, 06 Mar 2008 08:54:13 -0500

Thanks.  Third option is what I needed.

P

Maarten buis wrote:
--- "E. Paul Wileyto" <epw@mail.med.upenn.edu> wrote:


I need to convert the new date/time format (%tc) to the old standard (%td). However, I need to make sure I don't apply the conversion to non-%tc formats. (Bad things happen.) Is there a function that
queries a variable and returns the format (so that I can capture it
as a macro)?
First, did you know that you can save files in Stata8/9 format using
the -saveold- command?

Second, you can get a list of all variables with a certain format, to
be specified by you, using the -ds- command, see: -help ds-.

Third, you can get the format of a variable in a macro using extended
macro functions (in particular the extended macro function called -format-), see -help extended_fcn-.

Hope this helps,
Maarten


-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


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--
E. Paul Wileyto, Ph.D.
Assistant Professor of Biostatistics
Tobacco Use Research Center
School of Medicine, U. of Pennsylvania
3535 Market Street, Suite 4100
Philadelphia, PA 19104-3309

215-746-7147
Fax: 215-746-7140
epw@mail.med.upenn.edu
http://mail.med.upenn.edu/~epw/
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