Hi,
Try this:
dat1<-data.frame(col1=c(rep("high",3),rep("Neutral",3),rep("low",4)))
dat1$col2<-ifelse(dat1$col1=="high",dat1$col2<-"H",ifelse(dat1$col1=="Neutral",dat1$col2<-"N","L"))
dat1
col1 col2
1 high H
2 high H
3 high H
4 Neutral N
5 Neutral N
6 Neutral N
7 low L
8 low L
9 low L
10 low L
A.K.
----- Original Message -----
From: Sachinthaka Abeywardana <sachin.abeyward...@gmail.com>
To: r-help@r-project.org
Cc:
Sent: Sunday, August 12, 2012 8:43 PM
Subject: [R] if else elseif for data frames
Hi all,
It seems like I cannot use normal 'if' for data frames. What would be the
best way to do the following.
if data$col1='high'
data$col2='H'
else if data$col1='Neutral'
data$col2='N'
else if data$col='low'
data$col2='L'
else
#chuch a warning?
Note that col2 was not an existing column and was newly assigned for this
task.
Thanks,
Sachin
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