Message-ID: <1362754038.3419.YahooMailNeo@web142603.mail.bf1.yahoo.com>
Date: 2013-03-08T14:47:18Z
From: arun
Subject: Substitute value
In-Reply-To: <1362738198311-4660699.post@n4.nabble.com>
Hi,
try this:
sim.df<-data.frame(sim.code,sim.val,stringsAsFactors=FALSE)
sim.df[,1][-grep("\\d+$",sim.df[,1])]<- paste(sim.df[,1][-grep("\\d+$",sim.df[,1])] , 1,sep="")
sim.df
# ? ? sim.code sim.val
#1 1.1234.1a.1 ? ? ? 4
#2 1.1234.1a.2 ? ? ? 5
#3 1.3245.2c.5 ? ? ? 3
#4 4.6743.3c.1 ? ? ? 6
#5 4.3254.6b.4 ? ? ? 4
#6 3.5463.2a.1 ? ? ? 7
A.K.
----- Original Message -----
From: chris201 <chris.r.bennett at btinternet.com>
To: r-help at r-project.org
Cc:
Sent: Friday, March 8, 2013 5:23 AM
Subject: [R] Substitute value
Hi,
I have a large data frame and within this there is one column which contains
individual codes (eg. 1.1234.2a.2).? I am splitting these codes into their 4
components using strsplit (eg. "1", "1234", "2a", "2").? However there are
some individual codes which do not have a last component (eg. 2.4356.3b. ),
I want to give these codes a "1" as their last component (eg. 2.4356.3b.1)
but I can't get it to work.
This is my example and attempt:
sim.code<-c("1.1234.1a.1","1.1234.1a.2","1.3245.2c.5","4.6743.3c.","4.3254.6b.4","3.5463.2a.")
sim.val<-c(4,5,3,6,4,7)
sim.df<-data.frame(sim.code,sim.val)
sim.df$sim.code2<-sub(".$",".1",sim.df$sim.code)
sim.df
but this changes all the ends to ".1"
Thanks,
Chris
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