This is the wrong part of my code. > >> idName=users[users$id %in% ext] > id name > 1: U03AEKWTL agreenmamba > 2: U032FHV3S poisonivy > 3: U03AEKYL4 vairis >
Best is to use: idNames <- users[pmatch(ext, users$id, duplicates.ok = T)]. This leave me with an ordered and duplicate entries : > idNames <- users[pmatch(ext, users$id, duplicates.ok = T)] id name 1: U03AEKYL4 vairis 2: U03AEKYL4 vairis 3: U03AEKWTL agreenmamba 4: U032FHV3S poisonivy ______________________________________________ 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.