[R] Using if statement on function

[Patrick Burns]

If I understand the problem properly,
you want something like this:

function(FUN, ...)
{
	FunName <- deparse(substitute(FUN))
	if(FunName == "mean") {
		...
	} else if(FunName == "median") {
		...
	}
}

Using 'switch' is an alternative to 'if'.


On 28/06/2010 10:50, Etienne Stockhausen wrote:
> Hello everybody,
>
> I'm trying to use a if-statment on a function. For a better
> understanding I want to present a small example:
>
> FUN=mean # could also be median,sd or any other function
> if (FUN == mean)
> plot(...)
> if (FUN == median)
> plot(...) ...
>
> This doesn't work, because FUN is a function. I've already tried to
> coerce the type of FUN with as.character( ), but that's also not
> possible. I'm stuck with this task and it is absolutely necessary to
> give FUN the class of a function.
> I'm looking forward for any hints, clues or solutions for my problem.
>
> So much thanks in advance
>
> Etienne
>
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-- 
Patrick Burns
pburns at pburns.seanet.com
http://www.burns-stat.com
(home of 'Some hints for the R beginner'
and 'The R Inferno')