r dataframe add a column with cumulative values
df <- data.frame(id = rep(1:3, each = 5)
, hour = rep(1:5, 3)
, value = sample(1:15))
df %>% group_by(id) %>% mutate(csum = cumsum(value))r dataframe add a column with cumulative values
df <- data.frame(id = rep(1:3, each = 5)
, hour = rep(1:5, 3)
, value = sample(1:15))
df %>% group_by(id) %>% mutate(csum = cumsum(value))Copyright © 2021 Codeinu
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