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From |
Christoph Engel <engel@coll.mpg.de> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: If variable x contains variable y |

Date |
Sun, 15 Jul 2012 17:20:32 +0200 |

John,

gen x = . replace x = y if y == z (note the "==" in the if clause) Best Christoph Engel Am 7/15/2012 4:59 PM, schrieb Steve Nakoneshny:

John, At first glance, it would seem that -gen x = y if y = z- would serve as a solution. Of course, this assumes that your I'd vars are numerical and not string vars (which they probably should be stored as). Steve Sent via carrier pigeon On 2012-07-15, at 8:52 AM, "john.guzek@lshtm.ac.uk"<john.guzek@lshtm.ac.uk> wrote:Hello, This is my first time using statalist, I hope I do this all correctly! I'm looking to create a variable x which is equal to y, but only if the given value for y can be found in another variable, z. These are all id numbers, so say y is a universal id and z is a mother's id, telling you the universal id of the mother in relation to the child. For example: yzx 1.. 2.2 3.3 42. 5.. 6.. 737 8.. 9.. 107. So I'm trying to figure out how to create x. Any help would be much appreciated. Thanks, John * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/* * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

-- _________________________________________________________________ Prof. Dr. Christoph Engel Max-Planck-Institut zur Erforschung von Gemeinschaftsgütern Max Planck Institute for Research on Collective Goods Kurt-Schumacher-Strasse 10 D 53113 Bonn Tel. +49/228/91416-10 Fax +49/228/91416-11 e-mail:engel@coll.mpg.de http://www.coll.mpg.de http://www.coll.mpg.de/engel.html http://ideas.repec.org/e/pen22.html http://papers.ssrn.com/sol3/cf_dev/AbsByAuth.cfm?per_id=251559 _________________________________________________________________ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: If variable x contains variable y***From:*<john.guzek@lshtm.ac.uk>

**Re: st: If variable x contains variable y***From:*Steve Nakoneshny <scnakone@ucalgary.ca>

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