Hello Boris, thanks for your response.
So, firstly considered that i've been input a set of serches strings (.txt format) and i'm using regex to transform in a suitable format to my script. This part is a final part of my code and i wish putting in input to a subset. (.txt formatted) ---- STRINGS (INPUT) *[1] "municipio =='Limeira' "* *[2] "municipio =='Limeira' & mesincident =='marco' "* *[3] "municipio =='Limeira' & mesincident =='marco' & trechoklmetros > 1.00 12.300"* *...* *..* *..* *..* *[n] "......"* *--------------* desired_fomart <- it will reveice all strings to filter in a dataset by subset below: a loop each line: subset(dataset_read, *desired_fomart[i]*) My question: taking into consideration this cenario, in your oppinion your reply is my suitable for my problem, whereas i will to map each value in database? Once again, thank so much! :) 2015-04-18 11:04 GMT-03:00 Boris Steipe <boris.ste...@utoronto.ca>: > This is not a regular expression but simply a conjunction (sequence of > '&') of logical expressions. Moreover it's not wrong. Consider: > > xyz <- data.frame(municipio = c('Limeira'), mesincident = c('marco'), > trechoklmetros = c(3.00, -4.00, 30)) > xyz > > municipio mesincident trechoklmetros > 1 Limeira marco 3 > 2 Limeira marco -4 > 3 Limeira marco 30 > > > xyz$municipio =='Limeira' & xyz$mesincident =='marco' & xyz$trechoklmetros > > 1.00 > [1] TRUE FALSE TRUE > > xyz$municipio =='Limeira' & xyz$mesincident =='marco' & xyz$trechoklmetros > > 1.00 & xyz$trechoklmetros <= 12.3 > [1] TRUE FALSE FALSE > > > If there's a problem it seems to be elsewhere. > Cheers, > Boris > > > On Apr 17, 2015, at 4:22 PM, Fernando Gama <f.fabiogam...@gmail.com> > wrote: > > > Hello, > > > > I have benn problems to construct the pattern for this: > > > > municipio =='Limeira' & mesincident =='marco' & trechoklmetros > 1.00 > 12.300 > > > > I would like: > > > > municipio =='Limeira' & mesincident =='marco' & trechoklmetros > 1.00 > > *& **trechoklmetros > > <= *12.300 > > > > Any suggestion? > > > > > > -- > > Att, > > > > Fernando Gama da Mata > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > > https://stat.ethz.ch/mailman/listinfo/r-help > > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > > and provide commented, minimal, self-contained, reproducible code. > > -- Att, Fernando Gama da Mata [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.