[R] Odd behavior of remove command

[Dennis Fisher]

Colleagues,

I have encountered the following problem using R2.7.0 in Windows  
(Vista).

I want to delete a series of functions before I close an R session.  I  
execute the following commands from a script:

FunctionsToDelete       <- c("function1", "function2", "function3")

for (EachFunction in FunctionsToDelete)
        {
        if (exists(EachFunction))
                {
                remove(EachFunction)
                 } else invisible()
        }

This results in a series of warning messages (one message per entry in  
FunctionsToDelete):
        Warning in remove(EachFunction)  :  variable "EachFunction" was not  
found

I tried one variant, changing:
        remove(EachFunction)
to
        remove(list=EachFunction)

Warnings are now issued in the form:
        Warning in remove(list=EachFunction) : variable"function1" was not  
found
        Warning in remove(list=EachFunction) : variable"function2" was not  
found
        
Any thoughts as to the problem?

Dennis


Dennis Fisher MD
P < (The "P Less Than" Company)
Phone: 1-866-PLessThan (1-866-753-7784)
Fax: 1-415-564-2220
www.PLessThan.com


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