[R] Use function parameter as an unevaluated text string

[John Sorkin]

I would like to take a parameter passed to a function as a text string. I don't want the parameter evaluated, I want it uses exactly as passed,

doit <- function(data) {

cat("This function is using values from the data frame ",data,"\n")

}

mydata <- data.frame(x = c(1,2,3), y=c(3,2,1))
doit(mydata)

I would like to see the following printed

This function is using values from the data frame mydata

Thank you,
John




John David Sorkin M.D., Ph.D.
Professor of Medicine
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology and Geriatric Medicine
Baltimore VA Medical Center
10 North Greene Street
GRECC (BT/18/GR)
Baltimore, MD 21201-1524
(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing) 

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