[R] How do I obtain the current active path of a function that's being called?

[David Winsemius]

On Jun 5, 2012, at 8:35 PM, arun wrote:

>
>
> Hi Dave,
>
> I am interested in your suggestion.  But, look at this scenario.
>> func<-function()x
>> comment(func)<-"test"
>> comment(func)
> [1] "test"
>
>> func<-function()y
>> comment(func)<-"test2"
>> comment(func)
> [1] "test2"
>> func<-function()x
>> comment(func)
> NULL
>> func<-function()y
>> comment(func)
> NULL
>
>
> Does it imply that it needs different objects?
> Thanks,

I think it implies that I had one beer too many.

--  
David.
>
> ----- Original Message -----
> From: David Winsemius <dwinsemius at comcast.net>
> To: Michael <comtech.usa at gmail.com>
> Cc: r-help <R-help at stat.math.ethz.ch>
> Sent: Tuesday, June 5, 2012 8:12 PM
> Subject: Re: [R] How do I obtain the current active path of a  
> function that's being called?
>
>
> On Jun 5, 2012, at 7:51 PM, Michael wrote:
>
>> Thanks so much for your help!
>>
>> I'd like but however I couldn't provide the code since they are not  
>> in
>> public domain...
>>
>> But lets imagine I inherited a big pile of R projects/codes from  
>> other
>> people and there are lots of "source"s in the programs.
>>
>> And there are many definitions of function "A" in the directories.
>>
>> I wanted to put a breakpoint into the relavant function "A" that's
>> currently in the workspace, i.e. the one I am using...
>>
>> To insert a breakpoint, I need to find its location in the file  
>> system... I
>> need to find where it is...
>>
>> Simply searching by the name in the file system gave lots of hits...
>
> You could go through and label each of the `A` functions with a  
> comment that designated the file from which they were loaded.
>
>> func <- function() x
>> comment(func) <- "test"
>> comment(func)
> [1] "test"
>
> --David.
>
>>
>> Thank you!
>>
>> On Tue, Jun 5, 2012 at 4:35 PM, Andrew Miles  
>> <rstuff.miles at gmail.com> wrote:
>>
>>> Can you provide an example of the code file that you use to call the
>>> different functions?  Without that it might be hard for people to  
>>> answer
>>> your question.
>>>
>>> Offhand, I'd say that it is whatever version of function A was  
>>> called
>>> last.  If you are loading functions into the workspace, they are  
>>> treated as
>>> any other object, which is to say that you can only have one  
>>> function of
>>> the same name at a time.  Hence whenever you call a source file to  
>>> load in
>>> function A, the old function A gets overwritten.
>>>
>>> Andrew Miles
>>>
>>>
>>> On Jun 5, 2012, at 4:58 PM, Michael wrote:
>>>
>>>> Hi all,
>>>>
>>>> How do I obtain the current active path of a function that's being
>>> called?
>>>>
>>>> That's to say, I have several source files and they all contain
>>> definition
>>>> of function A.
>>>>
>>>> I would like to figure out which function A and from which file  
>>>> is the
>>> one
>>>> that's being called and is currently active?
>>>>
>>>> Thanks a lot!
>>>>
>>>>       [[alternative HTML version deleted]]
>>>>
>>>> ______________________________________________
>>>> R-help at r-project.org mailing list
>>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>>> PLEASE do read the posting guide
>>> http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html 
>>> >
>>>> and provide commented, minimal, self-contained, reproducible code.
>>>
>>>
>>
>>     [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
> David Winsemius, MD
> West Hartford, CT
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

David Winsemius, MD
West Hartford, CT