[R] different file types

[Huntsinger, Reid]

You might look at "eval" and "parse".

Reid Huntsinger

-----Original Message-----
From: Spencer Graves [mailto:spencer.graves at pdf.com] 
Sent: Tuesday, March 11, 2003 4:03 PM
To: janet rosenbaum
Cc: r-help
Subject: Re: [R] different file types


The command "'source' causes R to accept its input from the named file".

I don't know what you mean by "associative arrays", but "`switch' 
evaluates `EXPR' and accordingly chooses one of the further arguments".

Hope this helps.
Spencer Graves

janet rosenbaum wrote:
> Hi.  I am writing a program to read in different types of files from a
> GUI.  While it's easy to read different types of text files, I am
> stymied how to make R execute the input.  
> 
> Ideally I could get the command from input and dereference it like
> 	`command`(filename)
> where command would be read.dta or read.table or read.xport or any of 
> the similar commands.
> 
> Also, is there a way to make associative arrays?  
> It would be nice to be able to get the format from input and then have
> 	command<-array[format]
> 
> Otherwise, I guess I'll just do cascading if's.
> 
> Thanks,
> 
> Janet Rosenbaum
jerosenb at fas.harvard.edu
> Center for Basic Research in the Social Sciences, Harvard University
> 
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