On Thu, Sep 11, 2014 at 10:49 AM, raz wrote:
> Hi,
>
> I got the following data frame:
> dat1 <- read.table(text="a,b
> 1,A1
> 2,A1
> 3,A1
> 4,A1
> 5,A1
> 6,A2
> 7,A2
> 8,A2
> 9,A2
> 10,A2
> 11,B1
> 12,B1
> 13,B1
> 14,B1
> 15,B1",sep=",",header=T)
>
>
> I would like to add a new column dat1$new b
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of raz
Sent: Thursday, September 11, 2014 10:49 AM
To: r-help@r-project.org
Subject: [R] create new column by replacing multiple unique values in existing
column
Hi,
I got the following d
Hi,
I got the following data frame:
dat1 <- read.table(text="a,b
1,A1
2,A1
3,A1
4,A1
5,A1
6,A2
7,A2
8,A2
9,A2
10,A2
11,B1
12,B1
13,B1
14,B1
15,B1",sep=",",header=T)
I would like to add a new column dat1$new based on column "b" (dat$b) in
which values will be substituted according to their un
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