Hi All, Trying to get familiar with dplyr so I have a basic question:
How to summarise sum(Values) per species, maintaining Code column (each species has a Code): Species Values Code 1 Acanthocybium solandri 33 LC 2 Makaira nigricans 20 VU 3 Makaira nigricans 20 VU 4. Makaira nigricans 20 VU 5 Sarda sarda 2 LC 4 Lethrinus lentjan 12 LC 5 Raja pita 8 DD 6 Raja pita 2 DD I need: Species Values Code 1 Acanthocybium solandri 33 LC 2 Makaira nigricans 60 VU 3 Sarda sarda 2 LC 4 Lethrinus lentjan 12 LC 5 Raja pita 10 DD Thanks :) ______________________________________________ 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.