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Re: st: routine for matching of a str-variable

From   Thomas Zimmermann <>
Subject   Re: st: routine for matching of a str-variable
Date   Thu, 12 May 2011 10:41:46 +0200

Am 11.05.2011 um 19:19 schrieb Nick Cox:

Even better, -tab, generate()- will do it for you in one line!

thx for your advice, nick.
sorry for being a bit too imprecise.

i have 2 tables: table 1 (dataset) with some variables incl. one variable
"atc-code" with 700+ agents (14000+ rows). for counting that, the "tab,
gen()-thing" is perfectly suitable.

but: i have table 2, a specific subset of agents (200+) and their atc- code,
one agent = one row.

my working question: how many times is any of the agents in table 2
represented in the variable atc-code in table 1.

hope, i sort of disentangled the problem a bit.


Dr. Thomas Zimmermann
Institut f. Allgemeinmedizin
Universitätsklinikum Hamburg-Eppendorf
Martinistr. 52
20246 Hamburg
040 7410 56066

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