[R] Breakdown of Vector

Giovanni Petris GPetris at uark.edu
Fri Nov 21 17:35:27 CET 2008


Also something along the following lines:

> x <- 1:100
> y <- split(x, (seq(along = x) - 1) %/% 5)

HTH,
Giovanni Petris

> Date: Fri, 21 Nov 2008 07:48:09 -0800 (PST)
> From: Rajasekaramya <ramya.victory at gmail.com>
> Sender: r-help-bounces at r-project.org
> Precedence: list
> 
> 
> Hi,
> 
> I have a vector of Size 7420. I wanna break down in such a way that every 20
> elements of it should be as elements of an list.
> 
> Ex
> EXAM1
> ABC, SDF, LMN,ERF,EGC,EFG,WER,FRE,QWE,ERT,DGW,QWE,YUR,ERT,GHJ,FHH,....7420
> 
> what i want is 
> Breakdown.list
> [[1]]
> ABC,SDF,.....20
> [[2]]
> 21.....40
> [[3]]
> 41....50
> 
> i thought of using a for loop but i am wondering how to incerment
> test.breakdown.list<-list()
> for( i =0;i<=length(EXAM1);i+20)
> {
> test.breakdown.list<-Exam1[c(i:i+20)]
> print (paste(i))
> }
> 
> Ias this how we do...please correct me if am wrong.
> 
> Regards
> Ramya
> 
> 
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> 

-- 

Giovanni Petris  <GPetris at uark.edu>
Associate Professor
Department of Mathematical Sciences
University of Arkansas - Fayetteville, AR 72701
Ph: (479) 575-6324, 575-8630 (fax)
http://definetti.uark.edu/~gpetris/



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