align

From the definition of locf

locf

function (x)
{
   if (!inherits(x, "its"))
       stop("function is only valid for objects of class 'its'")
   y <- x
   jna <- which(apply(is.na(x), 2, any))
   for (j in jna) { y[, j] <- y[most.recent(!is.na(y[, j])), j] }
   return(y)
}

Where is the function most.recent? It si not in its.

On 5/18/05, Gabor Grothendieck <ggrothendieck at gmail.com> wrote:

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