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Re: st: How to check whether a string variable contains some characters


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: How to check whether a string variable contains some characters
Date   Sat, 26 May 2012 00:25:34 +0100

There is an -if- command and an -if- qualifier: see -help ifcmd- and
-help if-. Without seeing your code we can't tell whether your code is
incorrect, your terminology is incorrect, or both. This example
indicates how to use the -strpos()- function to select values of
-make- that contain the characters "Ford".

. sysuse auto
(1978 Automobile Data)

. l make if strpos(make, "Ford")

     +--------------+
     | make         |
     |--------------|
 24. | Ford Fiesta  |
 25. | Ford Mustang |
     +--------------+

This is an example of using the -if- qualifier.

Nick

On Fri, May 25, 2012 at 10:38 PM, Bersant Hobdari <bhobdari@gmail.com> wrote:

> I am working with a firm level data set, which contains, among other
> things, data on firm names and place of incorporation. This latter
> variable has a lot of missing values, which I would like to fill in to
> the extent possible by using the firm name variable. More
> specifically, if the firm name contains certain information, let say
> the extension GHMB, I would infer that the firm is incorporated in
> Germany. I am trying to use the "if" command to perform this operation
> but I keep getting an error message. Can this command be applied in
> this occasion? If not, is there any other command that can check
> whether a string variable contains certain characters?
>
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