Description Usage Arguments Details Examples
given NA values fill them with the next non-na value
1 |
x |
A numeric vector of values |
Works very well in context of dplyr to carry out backwards imputation
1 2 3 4 5 | fill_backward(c(1.0, NA, 2))
fill_backward(c(NA, 1, NA, 2))
library(dplyr)
df <- data_frame(id = c(1, 1, 2, 2), obs = c(1.2, 4.8, 2.5, NA))
df %>% group_by(id) %>% mutate(obs_imp = fill_backward(obs))
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