[R] how to grep in r

[arun]

Hi,

#A lengthy solution for the simple problem.

#dat1 is the dataset
res<-unlist(lapply(strsplit(dat1[,1],split="-"),function(x) if(length(x)==1) rep(x,2) else x))
res[seq(from=2,to=length(res),by=2)]

#or
gsub("[-]","",unlist(regmatches(dat1[,1],gregexpr("-.*|.*\\+",dat1[,1]))))
A.K.



----- Original Message -----
From: Tammy Ma <metal_licaling at live.com>
To: "r-help at r-project.org" <r-help at r-project.org>
Cc: 
Sent: Wednesday, December 12, 2012 8:40 AM
Subject: [R] how to grep in r


Hi, 


I met this problem.

   Trade_Price_Band         x
1              0-30 0.6237240
2           101-150 0.6743857
3           151-200 0.6778513
4           201-300 0.6640293
5           301-400 0.6630991
6             31-50 0.6314547
7           401-500 0.6776249
8              500+ 0.6557705
9             51-75 0.6621073
10           76-100 0.6623469


I want to get the following matrix

   Trade_Price_Band         x
1           30            0.6237240
2          150          0.6743857
3          200         0.6778513
4          300          0.6640293


how can I get this in r?


Thanks.

Tammy

                          
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