zoo (version 1.0-1)

na.locf: Last Observation Carried Forward

Description

Generic function for replacing each NA with the most recent non-NA prior to it.

Usage

na.locf(object, na.rm = TRUE, ...)

Arguments

object

an object.

na.rm

logical. Should leading NAs be removed?

...

further arguments passed to methods.

Value

• An object in which each NA in the input object is replaced by the most recent non-NA prior to it. If there are no earlier non-NAs then the NA is omitted (if na.rm = TRUE) or it is not replaced (if na.rm = FALSE).

See Also

zoo

Examples

az <- zoo(1:6)

bz <- zoo(c(2,NA,1,4,5,2))
na.locf(bz)

cz <- zoo(c(NA,9,3,2,3,2))
na.locf(cz)

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