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Re: st: How can I change Stata's regular expression parser to use Perl's parser, so that I can use perl compatible regular expressions (i.e. the same regular expression syntax that I use with Perl)
From
Nick Cox <[email protected]>
To
[email protected]
Subject
Re: st: How can I change Stata's regular expression parser to use Perl's parser, so that I can use perl compatible regular expressions (i.e. the same regular expression syntax that I use with Perl)
Date
Mon, 3 Dec 2012 11:56:15 +0000
In your blog entry you note
"for some reason, marksample is not working"
There is a documented reason why -marksample- appears not to work as
you expect. Your -marksample- syntax does not fit your problem. See
-help marksample- for this comment:
-strok- .... Specify this option if string variables in varlist are
to be allowed.
Nick
On Mon, Dec 3, 2012 at 8:42 AM, Shafique Jamal <[email protected]> wrote:
> Dear Nick, many thanks for your reply. I followed your suggestion and
> wrote a state .ado program to call a perl script to perform perl
> compatible regular expressions on variables, and generate variables
> indicating the results an storing named captures/groups.
>
> In case anyone is interested, the perl script and stata program are at:
>
> http://shafiquejamal.blogspot.com/2012/12/stata-tip-using-perl-compatible-regular.html
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