R help - Jan 2012 - Call dynamic functions

Hi all,

Does anybody know a better way to call functions than using 'eval'?

I need to call functions which it's name is stored in a variable. Right now
create the command string I'd like to run and then I run it using
"eval".

Running functions inside "eval" is starting annoying because it leads
to a
difficult error handling and difficult scenario to debug. So that I am
asking if there is someone that knows and easier way to do that.

Thanks


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WoW Peter!

That worked like charm. I earn you some hours of my time :)

Thanks a lot!

On Jan 27, 2012, at 10:14 , deivit wrote:
> Hi all,
>
> Does anybody know a better way to call functions than using 'eval'?
>
> I need to call functions which it's name is stored in a variable. Right
> now
> create the command string I'd like to run and then I run it using
"eval".
>
> Running functions inside "eval" is starting annoying because it
leads to a
> difficult error handling and difficult scenario to debug. So that I am
> asking if there is someone that knows and easier way to do that.
>>Well,
>> > fortune(106)
>>If the answer is parse() you should usually rethink the question.
>>  -- Thomas Lumley
>>     R-help (February 2005)
>>
>>
>>so how did you get yourself into that predicament in the first place?
That
being said, there are options like
>>
>>f <- get(funname, mode="function")
>>f(arguments)
>>
>>or
>>
>>call(funname, arglist)
>>
>>which may or may not do it for you.

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