From: jim holtman <jholtman_at_gmail.com>

Date: Thu, 03 Jul 2008 15:28:04 -0400

[19,] "B" "1"

[20,] "B" "1"

*>
*

*>
*

*>
*

Date: Thu, 03 Jul 2008 15:28:04 -0400

Here is an example of a way to do it:

*> x <- sample(LETTERS[1:5], 20, TRUE)
**> x
*

[1] "D" "E" "A" "B" "A" "E" "A" "E" "A" "E" "C" "D" "A" "E" "D" "E"
"A" "C" "B" "B"

*> # new vector with "D" and "E" = 0
**> new.x <- ifelse((x == "D") | (x == "E"), 0, 1)
**> cbind(x,new.x)
*

x new.x

[1,] "D" "0" [2,] "E" "0" [3,] "A" "1" [4,] "B" "1" [5,] "A" "1" [6,] "E" "0" [7,] "A" "1" [8,] "E" "0" [9,] "A" "1" [10,] "E" "0" [11,] "C" "1" [12,] "D" "0" [13,] "A" "1" [14,] "E" "0" [15,] "D" "0" [16,] "E" "0" [17,] "A" "1" [18,] "C" "1"

[19,] "B" "1"

[20,] "B" "1"

On Thu, Jul 3, 2008 at 2:57 PM, Spencer <zhuge99_at_u.washington.edu> wrote:

> Hi All,

*>
**> I'm relatively new to R. I have a variable, "internet use," which ranges
**> from "Almost everyday, "Several times a week," "Several times a month,"
**> "Seldom," "Never," and "Don't know." I want to recode this data into a new
**> variable, say "use.internet," such that I have a dichotomous variable
**> indicating simply whether or not they have access to the internet. Hence, I
**> want to make "Never" and "Don't know" equal to 0, everything else 1. I
**> thought about doing an if...then statement, but am not sure how to do this
**> in R. This is easy to do in SPSS.
**>
**> A sample of the existing array is the following:
**>
**> Seldom Several times a week
**> Several times a month
**> Never
**> Never Never Seldom
**> Several times a week
**> Never Never Almost everyday Never
**> And the ideal new variable:
**>
**> 1
**> 1
**> 1
**> 0
**> 0
**> 0
**> 1
**> 1
**> 0
**> 0
**> 1
**> 0
**>
**> Any help would be great!
**>
**> --
**> Spencer Cohen
**> PhD Student
**> Department of Geography
**> University of Washington
**> Email: zhuge99_at_u.washington.edu
**> Website: staff.washington.edu/zhuge99
**>
**>
**> ______________________________________________
**> R-help_at_r-project.org mailing list
**> https://stat.ethz.ch/mailman/listinfo/r-help
**> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
**> and provide commented, minimal, self-contained, reproducible code.
**>
**>
*

-- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem you are trying to solve? ______________________________________________ R-help_at_r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.Received on Thu 03 Jul 2008 - 19:30:28 GMT

Archive maintained by Robert King, hosted by
the discipline of
statistics at the
University of Newcastle,
Australia.

Archive generated by hypermail 2.2.0, at Thu 03 Jul 2008 - 20:31:48 GMT.

*
Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help.
Please read the posting
guide before posting to the list.
*