[R] Problem with recode -Error in parse(text = range[[1]][1]) : unexpected end of input in " c(0"

[John Fox]

Dear Simon,

The problem is that the recode specification is incorrect: In recode(),
colons mean ranges, and shouldn't appear within c(), which is used to list
values. See ?recode, and the following example:

> (green_2004_2 <- data.frame(french=runif(10, 0, 100)))
      french
1  42.693517
2  18.063822
3  21.046906
4  17.045596
5   9.308359
6  30.018840
7  53.598261
8  17.739567
9  65.836818
10 37.727236
> recode(green_2004_2$french, "50:100=0; 0:49.99=1")
 [1] 1 1 1 1 1 1 0 1 0 1

BTW, "50:100=0; 0:50=1" will produce the same result -- again see ?recode.

Finally, it's generally a good idea to send a small reproducible example
with a question like this. What if there were really a data-dependent bug in
recode()?

I hope this helps,
 John

--------------------------------
John Fox
Senator William McMaster 
  Professor of Social Statistics
Department of Sociology
McMaster University
Hamilton, Ontario, Canada
web: socserv.mcmaster.ca/jfox


> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On
> Behalf Of Simon Kiss
> Sent: April-14-10 3:56 AM
> To: r-help at r-project.org
> Subject: [R] Problem with recode -Error in parse(text = range[[1]][1]) :
> unexpected end of input in " c(0"
> 
> Dear colleagues,
> in the help archive there was a previous person who encountered a
> problem with the "recode" command in the car library. I'm not sure if
> that was solved, there was no posting to that effect, but I'm having
> the same problem.
> 
> I'm trying to recode a numeric variable with values from 0-100 into a
> binary variable with values (0,1).
> 
> The following command:
> 
> recode(green_2004_2$french, "c(50:100)=0; c(0:49.99)=1")
> 
> gets the following error message
> 
> Error in parse(text = range[[1]][1]) : unexpected end of input in " c(0"
> 
> I tried it with a second numerical variable in the same data set, but
> get precisely the same error at precisely the same location in the
> command, i.e. the second colon.
> As far as I can tell I have the most up-to-date version of car
> installed.
> Any suggestions?
> Yours, Simon Kiss
> 
> *********************************
> Simon J. Kiss, PhD
> SSHRC and DAAD Post-Doctoral Fellow
> John F. Kennedy Institute of North America Studies
> Free University of Berlin
> Lansstraße 7-9
> 14195 Berlin, Germany
> Cell: +49 (0)1525-300-2812,
> Web: http://www.jfki.fu-berlin.de/index.html
> 
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