Message-ID: <005101c7296a$212df280$bfcc4dc7@Aglog>
Date: 2006-12-27T03:37:35Z
From: Feng Qiu
Subject: How to write string dynamicly?
Hi everyone:
I'm trying to compose a string dynamicly for the parameter input of
some function. For example:
In package MASS, function lda() require to input the name of predictor
variable. Let's say the 16th column is the predictor variable. Then we call
the function like this: lda(V16~., data=mydata). I don't want to hard-code
the call, instead, I would like to use a dynamic expression for this
parameter so that I can use my program on different set of data.
I guess there are some function that can do this, but I didn't find
it in "Introduction to R" so far, could someone please tell me this kind of
function? Thank you!
Best,
Feng