Check out the 'locf' function in the 'its' package and the
'na.locf'
function in the 'zoo' package.
On 5/18/05, Omar Lakkis <uofiowa at gmail.com>
wrote:> Is there a function in R that is similar to Splus's align?
>
> The idea is, if I have a data.frame, or an its object that is like this:
>
> 2002-01-03 5
> 2002-01-04 NA
> 2002-01-05 7
> 2002-01-06 NA
>
> I want to align it by the last value to this:
>
> 2002-01-03 5
> 2002-01-04 5
> 2002-01-05 7
> 2002-01-06 7
>
> TITLE:
> Function align
>
> USAGE:
> align(x, pos, how, error.how, localzone, matchtol, by, k.by,
> week.align, holidays)
>
> ARGUMENTS:
> x: argument, no default.
> pos: argument, no default.
> how: argument, `default = "NA".'
> error.how: argument, `default = "NA".'
> localzone: argument, `default = F.'
> matchtol: argument, `default = 0.'
> by: argument, no default.
> k.by: argument, `default = 1.'
> week.align: argument, `default = NULL.'
> holidays: argument, `default = timeDate().'
>
> DESCRIPTION:
>
> Align series object x to new positions
>
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