[R] Check for is.object

[Jonathan P Daily]

I think you want the function ?exists

>if(!exists("NewObject"))

--------------------------------------
Jonathan P. Daily
Technician - USGS Leetown Science Center
11649 Leetown Road
Kearneysville WV, 25430
(304) 724-4480
"Is the room still a room when its empty? Does the room,
 the thing itself have purpose? Or do we, what's the word... imbue it."
     - Jubal Early, Firefly

r-help-bounces at r-project.org wrote on 11/22/2010 10:14:51 AM:

> [image removed] 
> 
> [R] Check for is.object
> 
> Santosh Srinivas 
> 
> to:
> 
> r-help
> 
> 11/22/2010 10:17 AM
> 
> Sent by:
> 
> r-help-bounces at r-project.org
> 
> Hello,
> 
> I am trying to recursively append some data from multiple files into a
> common object
> 
> For this, I am using in a loop
> 
> NewObject <- rbind(NewObject,tempObject)
> 
> 
> For the first loop, obviously there is no NewObject ... so I wanted to 
do
> NewObject <- tempObject[0,]
> 
> Now when it loops again I want to put the statement do "NewObject <-
> tempObject[0,]" inside a if statement ... so that it does I can skip it 
once
> NewObject has been initialized.
> 
> But, is.object doesn't seem to work. 
> 
> What is the alternative check that I can do? And is there a better way 
to
> achieve what I want?
> 
> Thanks,
> S
> 
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