[R] Manipulate strings reordering some elements

[Igor Sosa Mayor]

Berend:

1. 1000 thanks for your help. It works perfectly
2. many thanks for the analysis of the expression; i will try to
understand it. Perl is really not easy to read

thanks again!

On Tue, Mar 13, 2012 at 11:51:49AM +0100, Berend Hasselman wrote:
> 
> On 13-03-2012, at 11:28, Igor Sosa Mayor wrote:
> 
> > many thanks, Berend.
> > 
> > It works well... but with a problem because i was not completely clear
> > in my first email.
> > 
> > It works with cases such as:
> > Franco (El)
> > Regueras (Las)
> > 
> > but not with other cases such as:
> > Fauces de San Andrés (Las)
> > 
> > any hints? or meaybe if it is very complicated, any short explanation of
> > the perl expression you wrote (as far as I can understand, the point is
> > this \\3 \\1...).
> 
> 
> Try this
> 
> gsub("([^\\(]+)(\\()(.*)(\\))","\\3 \\1", municipios, perl=TRUE)
> 
> ([^\\(]+)   look for a sequence of characters not (, this becomes the \1
> 
> (\\()         match (
> 
> (.*)          match zero or more anything, this becomes \3
> 
> (\\))        match closing )
> 
> All subexpressions surrounded by ()  for backreferencing in replacement expression to work.
> 
> The result of the above expression will contain trailing blanks if there was a (El) etc.
> You can get rid of those by using gsub("\\s+$","",x)
> 
> I'm in a bit of a hurry now, so I won't be able to answer further questions for several hours.
> 
> Berend
> 

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