[R] function with xyplot

From: Diego Gruber <diego.gruber_at_gmail.com>
Date: Thu, 14 Jun 2007 12:53:38 +0200


Hi,

I'm a new user trying to switch from SAS, so sorry for the beginner's question: Suppose I have a dataframe DF that contains variables X,Y,Z. I am trying to write a function like this:

myplot <- function(varname){xyplot(varname ~ Y, group = Z, data = DF)}.

The problem is then how to enter X into my function. If I write myplot("X") I get an error because the argument is a string and xyplot can make nothing out of it. If I write myplot(X) I also get an error that tells me the object X does not exist.

Thanks for your help,

Diego

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