search for: acanthocybium

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2020 Oct 15
1
Dplyr question
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...