[Solved] Loop over NA values in subsequent rows in R [closed]

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reproducible data which YOU should provide:

df <- mtcars
df[c(1,5,8),1] <-NA

code:

IND <- is.na(df[,1])
df[IND,1] <- df[dplyr::lag(IND,1L, F),1] * 3
  • since you use lag I use lag. You are saying “previous”. So maybe you want to use lead.
  • What happens if the first value in lead case or last value in lag case is missing. (this remains a mystery)

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solved Loop over NA values in subsequent rows in R [closed]