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st: New version of -chardef- on SSC

From   "Newson, Roger B" <>
To   "''" <>
Subject   st: New version of -chardef- on SSC
Date   Mon, 9 Nov 2009 10:08:27 +0000

Thanks to Kit Baum, a new version of the -chardef- package is now available for download from SSC, superseding the version distributed last week. In Stata, use the -ssc- command to do this, or -adoupdate- if you already have last week's version.

The -chardef- package is described as below on my website. The new version adds a new module -charundef-, which undefines a list of variable characteristics previously defined by the -chardef- module (or even by -char define-). Therefore, -charundef- cleans up after -chardef-.

Best wishes


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
Tel: +44 (0)20 7352 8121 ext 3381
Fax: +44 (0)20 7351 8322
Web page:
Departmental Web page:

Opinions expressed are those of the author, not of the institution.

package chardef from

      chardef: Assign values to a characteristic of a list of variables

      chardef is a mass-production version of the char define
      command.  It assigns a list of values to a named
      characteristic of a list of variables specified by a varlist.
      If the varlist is not supplied, then chardef assigns the
      values to the named characteristic for all variables in the
      dataset currently in the memory.  If the named characteristic
      is not supplied, then the values are assigned to the
      characteristic varname, used by the list command.  If the list
      of values is shorter than the varlist, then the list of values
      is extended on the right with copies of the last value.
      Optionally, a prefix and/or a suffix may be added to the
      values.  The charundef module resets a list of characteristics
      to empty strings for a list of variables.
      Author: Roger Newson
      Distribution-Date: 06november2009
      Stata-Version: 11

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