Get latest available value for filling missing values in the next rows R [duplicate]-CodePudding

i have table with missing values, how can i fill the next 3 missing values with the latest available value?

as example i use this table, I want to fill 2021 May - 2021 Jul value with the latest non-missing data which is 249.

Date        value
2021 Jan    500
2021 Feb    2340
2021 Mar    3000
2021 Apr    249
2021 May    NA
2021 Jun    NA
2021 Jul    NA

CodePudding user response：

Try with the zoo library:

library(zoo)
na.locf(na.locf(df))

CodePudding user response：

Another option is with fill:

library(tidyr)
df %>%
  fill(value)

You could specify the direction in which to fill with .direction = ... but "down" is the default so in your case need not be specified