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st: New package -gsgroup- on SSC
From
"Roger B. Newson" <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: New package -gsgroup- on SSC
Date
Wed, 03 Oct 2012 11:54:36 +0100
Thanks again to Kit Baum, a new package -gsgroup- is now available for
download from SSC. In Stata, use the -ssc- command to do this.
The -gsgroup- package is described as below on my website, and creates a
grouping variable corresponding to a -gsort- key, leaving the data in
their original order. Optionally, it also creates an output dataset (or
resultsset) with 1 observation per value of the group variable, and data
on the corresponding -gsort- key values. This can be useful when we
create a concatenated resultsset whose observations contain values of
the generated group variable, and we want it also to contain the
corresponding -gsort- key variables. The online help for -gsgroup-
contains an example using -gsgroup- with -margins- and the SSC package
-parmest-.
Best wishes
Roger
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package gsgroup from http://www.imperial.ac.uk/nhli/r.newson/stata10
---------------------------------------------------------------------------------------
TITLE
gsgroup: Create a group variable and optionally an output dataset
for a gsort key
DESCRIPTION/AUTHOR(S)
gsgroup inputs a gsort key (a list of elements of the form used
by gsort), and generates as output a new variable, indicating
the sequential order of the group to which each observation
belongs, and (optionally) an output dataset (or resultsset),
with 1 observation per group, and data on the values of the
generated variable, and the variables of the gsort key
corresponding to that group. Unlike gsort, gsgroup does not
change the sort order of the dataset in memory. The output
dataset can be merged into other datasets, using the official
Stata command merge or the SSC package addinby. gsgroup is
typically used together with the SSC packages parmest and
xcontract.
Author: Roger Newson
Distribution-Date: 27september2012
Stata-Version: 10
INSTALLATION FILES (click here to install)
gsgroup.ado
gsgroup.sthlp
---------------------------------------------------------------------------------------
(click here to return to the previous screen)
--
Roger B Newson BSc MSc DPhil
Lecturer in Medical Statistics
Respiratory Epidemiology and Public Health Group
National Heart and Lung Institute
Imperial College London
Royal Brompton Campus
Room 33, Emmanuel Kaye Building
1B Manresa Road
London SW3 6LR
UNITED KINGDOM
Tel: +44 (0)20 7352 8121 ext 3381
Fax: +44 (0)20 7351 8322
Email: [email protected]
Web page: http://www.imperial.ac.uk/nhli/r.newson/
Departmental Web page:
http://www1.imperial.ac.uk/medicine/about/divisions/nhli/respiration/popgenetics/reph/
Opinions expressed are those of the author, not of the institution.
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