By the way, and putting on a hat as one of
the Editors of the Stata Journal: we would
like to carry something longer and expository
in the Stata Journal on regular expressions,
and at least one (person|cyborg) has
expressed serious interest in writing that.
Nick
[email protected]
scott hankins
> The "V" is there because I [...] tried to do two things
> at once.
Nick Cox
> > "76(4|5).3"
> >
> > and
> >
> > "^76(4|5).3"
> >
> > both seem to work here. What's that "V" doing?
scott hankins
> > > I am trying to use the new regex functions and am having
> some issues.
> > >
> > > I am familiar (but not an expert) with regular
> expressions in Perl and
> > > I am problems applying that knowledge in Stata. Does
> anyone know how
> > > regular expressions are implemented in Stata? Ideally, I
> would like
> > > more than "Regular expression syntax is based on Henry
> Spencer's NFA
> > > algorithm and as such, is nearly identical to the POSIX.2
> standard."
> > > as I have not been able to find a clear exposition of the POSIX.2
> > > standard online (I am sure there is one, I just can't
> find it :) ).
> > >
> > >
> > > ***********************************
> > > here is my problem
> > >
> > > pdx
> > > 76403
> > > 76403
> > > 76513
> > > 76503
> > >
> > >
> > > I tried the following code but it did not find any matches, this
> > > should find all 4 of the above occurrences.
> > >
> > > replace weight = 3 if regexm(pdx,"V76(4|5).3")
> >
> > *
> > * For searches and help try:
> > * http://www.stata.com/support/faqs/res/findit.html
> > * http://www.stata.com/support/statalist/faq
> > * http://www.ats.ucla.edu/stat/stata/
> >
>
> *
> * For searches and help try:
> * http://www.stata.com/support/faqs/res/findit.html
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
>
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
