Hi again, I've got another question... I often use the symbol == to select some levels of factor variables like : data[data$var=="blabla", [ But this time, I'd like to select all the levels of my variable wich contain the letter "B", is that a way to determine this conditions ? Thanks a lot ! Zo? -- View this message in context: http://r.789695.n4.nabble.com/select-levels-of-factor-variables-tp3549189p3549189.html Sent from the R help mailing list archive at Nabble.com.
On May 25, 2011, at 4:46 AM, zoe.cryocla wrote:> Hi again, > I've got another question... > > > I often use the symbol == to select some levels of factor variables > like : > data[data$var=="blabla", [ > > But this time, I'd like to select all the levels of my variable wich > contain > the letter "B", is that a way to determine this conditions ?Perhaps with grep and/or %in% Got a reproducible example? ...preferably constructed with dput -- David Winsemius, MD West Hartford, CT