R help - Jul 2009 - Function match.call or saving all initial parameters

This does what you want:

expand.call <- function(definition = NULL, call = sys.call(sys.parent()),
expand.dots = TRUE)
# like match.call, but with all formal args instead of only the specified
ones
{
    ans <- as.list(match.call(definition, call, expand.dots))
    frmls <- formals(deparse(ans[[1]]))
    add <- which(!(names(frmls) %in% names(ans)))
    return(as.call(c(ans, frmls[add])))
}

Best,
Fabian

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it doesn't actually- this should work:

expand.call <- function(call=sys.call(sys.parent(1)), expand.dots = TRUE)
# similar to match.call, but with all formal args not the specified ones
only
{
    ans <- as.list(call)
    frmls <- formals(deparse(ans[[1]]))
    add <- which(!(names(frmls) %in% names(ans)))
    return(as.call(c(ans, frmls[add])))
}

On Thu, Jul 30, 2009 at 11:22 AM, Fabian Scheipl <
Fabian.Scheipl@stat.uni-muenchen.de> wrote:
> This does what you want:
>
> expand.call <- function(definition = NULL, call =
sys.call(sys.parent()),
> expand.dots = TRUE)
> # like match.call, but with all formal args instead of only the specified
> ones
> {
>     ans <- as.list(match.call(definition, call, expand.dots))
>     frmls <- formals(deparse(ans[[1]]))
>     add <- which(!(names(frmls) %in% names(ans)))
>     return(as.call(c(ans, frmls[add])))
> }
>
> Best,
> Fabian
>
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