st: New version of -xcontract- on SSC

[Roger Newson <r.newson@imperial.ac.uk>]

Thanks to Kit Baum, a new version of the -xcontract- package is now 
available for download from SSC. In Stata, use the -ssc- command to do 
this, or -adoupdate- if you already have an old version.

The -xcontract- package is described as below on my website. It has been 
updated to Stata Version 10,  with a .sthlp online help file, for 
compatibility with some firewalls which have a problem with the old 
Stata 8 .hlp extension. Users of Stata Versions 8 or 9 can still 
download the old Stata 8 version of -xcontract- from my website by 
typing, in Stata,

net from http://www.imperial.ac.uk/nhli/r.newson/stata8/

and downloading the Stata 8 version of -xcontract-.

Best wishes

Roger


--
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: r.newson@imperial.ac.uk
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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package xcontract from http://www.imperial.ac.uk/nhli/r.newson/stata10
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TITLE
      xcontract: Make data set of frequencies and percents on disk or 
in memory

DESCRIPTION/AUTHOR(S)
      xcontract is an extended version of contract. It creates a data 
set with one
      observation per combination of values of a list of variables in 
the existing
      data set and new variables containing the frequency and percent 
of each
      combination, and, optionally, the cumulative frequency and 
percent of each
      combination. A list of by-variables can be used with xcontract, 
and the
      percents will then be calculated within by-groups. The output 
data set may
      either be listed to the Stata log, or saved to a disk file, or 
written to the
      memory (overwriting any existing data set).

      Author: Roger Newson
      Distribution-Date: 06may2010
      Stata-Version: 10

INSTALLATION FILES                                  (click here to install)
      xcontract.ado
      xcontract.sthlp
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(click here to return to the previous screen)

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