r - Filling NA values with repetition of the leftmost non-NA value in zoo -


how fill na values repetition of leftmost non-na value in zoo?

in zoo pdf guide have function na.fill performs task. question how function take leftmost non-na value?

below little example 

> z <- zoo(c(na, 2, na, 1, 4, 5, 2, na)) > z  1  2  3  4  5  6  7  8  na  2 na  1  4  5  2 na  > na.fill(z, "extend")   1   2   3   4   5   6   7   8  2.0 2.0 1.5 1.0 4.0 5.0 2.0 2.0  > na.fill(z, c("extend", na))  1  2  3  4  5  6  7  8   2  2 na  1  4  5  2  2

the result want following:

 1  2  3  4  5  6  7  8   na  2 2  1  4  5  2  2  

library(zoo) z <- zoo(c(na, 2, na, 1, 4, 5, 2, na)) na.locf(z, na.rm = false) # 1  2  3  4  5  6  7  8  #na  2  2  1  4  5  2  2

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