[R] generic pasting of strings

[Dimitris Rizopoulos]

try something like:

apply(tmp1[, ncol(tmp1):1], 1, paste, sep = ">")


I hope it helps.

Best,
Dimitris

----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://med.kuleuven.be/biostat/
     http://www.student.kuleuven.be/~m0390867/dimitris.htm


----- Original Message ----- 
From: "Robert Lischke" <robert.lischke at zmms.tu-berlin.de>
To: <r-help at stat.math.ethz.ch>
Sent: Tuesday, October 31, 2006 12:36 PM
Subject: [R] generic pasting of strings


> Hi there,
>
> is there a way to make the following code generic, so that i can 
> paste()
> the columns in tmp1 depending on the dimensions given in embed()?
>
>> tmp1 <- embed(as.vector(shrinkTable$AOIname), dimension = 2);
>> tmp1
>       [,1]   [,2]
> [1,] "AOI4" "AOI1"
> [2,] "AOI6" "AOI4"
> [3,] "AOI4" "AOI6"
>> tmp2 <- paste(tmp1[, 2], tmp1[, 1], sep = ">");
>> tmp2
> [1] "AOI1>AOI4" "AOI4>AOI6" "AOI6>AOI4"
>
> for dimension = 3 this would look like this:
>
>> tmp1 <- embed(as.vector(shrinkTable$AOIname), dimension = 3);
>> tmp1
>      [,1]   [,2]   [,3]
> [1,] "AOI6" "AOI4" "AOI1"
> [2,] "AOI4" "AOI6" "AOI4"
>> tmp2 <- paste(tmp1[ ,3], tmp1[, 2], tmp1[, 1], sep = ">");
>> tmp2
> [1] "AOI1>AOI4>AOI6" "AOI4>AOI6>AOI4"
>
> Any ideas?
>
> Thanks for your help,
>
>
> Robert Lischke
>
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