Hi If i understand your question correctly, it seems split or split date will do what you want.
BOL--EK On Fri, Apr 26, 2019 at 10:51 AM Lorenzo Isella <lorenzo.ise...@gmail.com> wrote: > > Dear All, > I must be drowning in a glass of water. > Consider the following data set > > tt2<-structure(list(year = c(2000, 2001, 2002, 2003, 2004, 2005, 2006, > 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, > 2018), country = c("DE", "DE", "DE", "DE", "DE", "DE", "DE", > "DE", "DE", "DE", "DE", "DE", "DE", "DE", "DE", "DE", "DE", "DE", > "DE"), berd = c(35600, 36331.9, 36950, 38029, 38363, 38651.038, > 41148, 43034, 46073, 45275, 46929, 51077.2, 53790.1, 53566.2, > 56996.5, 60952, 62826, 68644, NA)), row.names = c(NA, -19L), class = > c("tbl_df", > "tbl", "data.frame")) > > > I would like to obtain a list of it, where every element of the list > contains the subset of tt2 for which year>=2000, > year>=2001....year>=2018 etc... > It seems something I can tackle with map or map2 from purrr, but so > far I am banging my head against the wall. > Anyone can help me? > Regards > > Lorenzo > > ______________________________________________ > 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. ______________________________________________ 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.