It's easier that you think;
Fancyhist <- function(x, break=NULL, ...) {
# first, process x into xprocess somehow, then ...
if (is.null(breaks)) {
# define the histogram breaks somehow, then call hist:
}
hist(xprocess, break=breaks, ...)
}
/H
On Tue, Mar 29, 2011 at 10:47 AM, Cable, Samuel B Civ USAF AFMC
AFRL/RVBXI <samuel.ca...@hanscom.af.mil> wrote:
> I would like to do something like the following:
>
> Fancyhist<-function(x,...) {
>
> # first, process x into xprocess somehow, then ...
>
> if (is.null(breaks)) { # yes, I know this is wrong
> # define the histogram breaks somehow, then call hist:
> hist(xprocess,breaks=breaks,...)
> } else {
> # use breaks give in calling argument
> hist(xprocess,...)
> }
>
> }
>
> But, those of you who know R better than I do have already spotted that
> "is.null(breaks)" just won't work. Neither does "exists" or "missing".
>
> I can think of ways to do this involving new arguments with new names --
> like "histbreaks" or something -- but that seems inelegant.
>
> Is there a way to do what I am trying to do here?
>
> Thanks.
>
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> and provide commented, minimal, self-contained, reproducible code.
>
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