[R] Combining the components of a character vector

Wiener, Matthew matthew_wiener at merck.com
Thu Apr 3 15:31:05 CEST 2003

The collapse argument does what you want:

x <- c("Bob", "loves", "Sally")
paste(c, collapse = " ")

Hope this helps,

Matt Wiener

-----Original Message-----
From: John Miyamoto [mailto:jmiyamot at u.washington.edu] 
Sent: Wednesday, April 02, 2003 6:54 PM
To: R discussion group
Subject: [R] Combining the components of a character vector

Dear Help,
   Suppose I have a character vector.

x <- c("Bob", "loves", "Sally")

I want to combine it into a single string:  "Bob loves Sally" .
paste(x) yields:
[1] "Bob"   "loves" "Sally"

The following function combines the character vector into a string in the
way that I want, but it seems somewhat inelegant.

paste.vector <- function(x, ...) {
	output <- NULL
	for (i in 1:length(x)) output <- paste(output, x[i], ...)
	output	} #end of function definition

[1] " Bob loves Sally"

Is there a more natural (no loop) way to do this in R?

John Miyamoto

John Miyamoto, Dept. of Psychology, Box 351525
University of Washington, Seattle, WA 98195-1525
Phone 206-543-0805, Fax 206-685-3157, Email jmiyamot at u.washington.edu
Homepage http://faculty.washington.edu/jmiyamot/

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