I want to divide each cell by the previous cell in the same column and generate a new calculated column that has the new values.
Here is a solution using the
lag() function from
library(dplyr, warn.conflicts = FALSE) data <- data.frame(col = c(4, 8, 32, 64)) mutate(data, new_col = col / lag(col)) #> col new_col #> 1 4 NA #> 2 8 2 #> 3 32 4 #> 4 64 2
Created on 2020-04-18 by the reprex package (v0.3.0)
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Thanks so much for your reply. it works