Posts by dudu • 111 points

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  A: SUMMATION IN A COLUMN IN A LINE INTERVAL

  You can also use the package dplyr library(dplyr) summary <- dados %>% mutate (Date = as.Date(Date, "%m/%d/%Y"), Mes = as.Date(Date, "%Y%m")) %>% group_by (Mes) %>% summarise (Soma = sum…

  r

  answered 4 years, 9 months ago dudu 111