Hi all, 

Thanks very much for the prompt responses! All the suggestions worked :)

Paul




________________________________
From: Martin Morgan <mtmorgan@fhcrc.org>

Cc: r-help@stat.math.ethz.ch
Sent: Saturday, July 4, 2009 1:01:16 PM
Subject: Re: [R] newby question

Hi Paul --

Paul Evans wrote:
> Hi,
> 
> I work with bio-conductor, but this is probably a basic R question.
> 
> I want to emulate the GOBPOFFSPRING$"GO:0008150" command:
> 
> 
>> allBP <- GOBPOFFSPRING$"GO:0008150"
>> class(allBP)
> [1] "character"
>> length(allBP)
> [1] 16066
> 
> I want to create a function so that I can execute the command by passing as a parameter the portion in quotes in the above command (""GO:0008150"). So my current function looks like:
> 
>> str <- "GO:0008150"
>> ifunc <- function(str){
> + allBP <- paste('GOBPOFFSPRING$',str,sep='')
> + return(allBP)
> + }
>> x <- ifunc(str)
>> class(x)
> [1] "character"
>> length(x)
> [1] 1
> 
> But this just returns a string. How do I get the command to execute?

use GOBPOFFSPRING[[str]]. It is in some ways a general R question, but
actually GOBPOFFSPRING is an instance of a class with specialized
functionality, and you'll better advice about it on the Bioconductor
mailing list.

Martin

> 
> thanks!
> 
> 
>      
>     [[alternative HTML version deleted]]
> 
> ______________________________________________
> R-help@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.


      
	[[alternative HTML version deleted]]


