R › R help

if else elseif for data frames

Classic

List

Threaded

11 messages Options

Sachinthaka Abeywardana

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

[[alternative HTML version deleted]]

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

arun kirshna

Re: if else elseif for data frames

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 <[hidden email]>
To: [hidden email]
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

    [[alternative HTML version deleted]]

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

Sachinthaka Abeywardana

Re: if else elseif for data frames

The thing is I have about 10 cases. I saw the ifelse statement but was
wondering if there was a cleaner method of doing it. The coding will get
really messy when I write all 10 cases.

Cheers,
Sachin

On Mon, Aug 13, 2012 at 11:04 AM, arun <[hidden email]> wrote:

> 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$col2<-"N","L"))
> dat1
> col1 col2
> 1 high H
> 2 high H
> 3 high H
> 4 Neutral N
> 5 Neutral N
> 6 Neutral N
> 7 low L
> 8 low L
> 9 low L
> 10 low L
>
> A.K.
>
>
>
>
> ----- Original Message -----
> From: Sachinthaka Abeywardana <[hidden email]>
> To: [hidden email]
> Cc:
> Sent: Sunday, August 12, 2012 8:43 PM
> Subject: [R] if else elseif for data frames
>
> Hi all,
>
> It seems like I cannot use normal 'if' for data frames. What would be the
> best way to do the following.
>
> if data$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
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> [hidden email] mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>

[[alternative HTML version deleted]]

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

arun kirshna

Re: if else elseif for data frames

Hi,

Try this,

set.seed(1)
dat2<-data.frame(col1=c(sample(c("high","Neutral","low"),10,replace=TRUE)),col2=rep(NA,10))
dat2$col2[dat2$col1=="high"]<-"H"
dat2$col2[dat2$col1=="Neutral"]<-"N"
dat2$col2[dat2$col1=="low"]<-"L"
dat2
#      col1 col2
#1     high    H
#2 Neutral    N
#3 Neutral    N
#4      low    L
#5     high    H
#6      low    L
#7      low    L
#8 Neutral    N
#9 Neutral    N
#10    high    H

Not sure if this is okay for you,
A.K.rr

A.K.
________________________________
From: Sachinthaka Abeywardana <[hidden email]>
To: arun <[hidden email]>
Cc: R help <[hidden email]>
Sent: Sunday, August 12, 2012 9:07 PM
Subject: Re: [R] if else elseif for data frames

The thing is I have about 10 cases. I saw the ifelse statement but was wondering if there was a cleaner method of doing it. The coding will get really messy when I write all 10 cases.

Cheers,
Sachin

On Mon, Aug 13, 2012 at 11:04 AM, arun <[hidden email]> wrote:

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$col2<-"N","L"))
>dat1
>      col1 col2
>1     high    H
>2     high    H
>3     high    H
>4 Neutral    N
>5 Neutral    N
>6 Neutral    N
>7      low    L
>8      low    L
>9      low    L
>10     low    L
>
>A.K.
>
>
>
>
>
>----- Original Message -----
>From: Sachinthaka Abeywardana <[hidden email]>
>To: [hidden email]
>Cc:
>Sent: Sunday, August 12, 2012 8:43 PM
>Subject: [R] if else elseif for data frames
>
>Hi all,
>
>It seems like I cannot use normal 'if' for data frames. What would be the
>best way to do the following.
>
>if data$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
>
>    [[alternative HTML version deleted]]
>
>______________________________________________
>[hidden email] mailing list
>https://stat.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.
>
>

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

arun kirshna

Re: if else elseif for data frames

HI,

Much better solution:
library(car)
set.seed(1)
dat2<-data.frame(col1=c(sample(c("high","Neutral","low"),10,replace=TRUE)),col2=rep(NA,10))
x<-dat2$col1
dat2$col2<-recode(x,'"high"="H";"Neutral"="N";"low"="L"')
dat2
#      col1 col2
#1     high    H
#2 Neutral    N
#3 Neutral    N
#4      low    L
#5     high    H
#6      low    L
#7      low    L
#8 Neutral    N
#9 Neutral    N
#10    high    H

A.K.

________________________________
From: Sachinthaka Abeywardana <[hidden email]>
To: arun <[hidden email]>
Sent: Sunday, August 12, 2012 9:18 PM
Subject: Re: [R] if else elseif for data frames

yup looks good.

thanks
Sachin

On Mon, Aug 13, 2012 at 11:17 AM, arun <[hidden email]> wrote:

Hi,

>
>Try this,
>
>set.seed(1)
> dat2<-data.frame(col1=c(sample(c("high","Neutral","low"),10,replace=TRUE)),col2=rep(NA,10))
>dat2$col2[dat2$col1=="high"]<-"H"
> dat2$col2[dat2$col1=="Neutral"]<-"N"
> dat2$col2[dat2$col1=="low"]<-"L"
> dat2
>#      col1 col2
>#1     high    H
>#2 Neutral    N
>#3 Neutral    N
>#4      low    L
>#5     high    H
>#6      low    L
>#7      low    L
>#8 Neutral    N
>#9 Neutral    N
>#10    high    H
>
>
>Not sure if this is okay for you,
>A.K.rr
>
>
>A.K.
>
>________________________________
>From: Sachinthaka Abeywardana <[hidden email]>
>To: arun <[hidden email]>
>Cc: R help <[hidden email]>
>Sent: Sunday, August 12, 2012 9:07 PM
>Subject: Re: [R] if else elseif for data frames
>
>
>
>The thing is I have about 10 cases. I saw the ifelse statement but was wondering if there was a cleaner method of doing it. The coding will get really messy when I write all 10 cases.
>
>Cheers,
>Sachin
>
>
>On Mon, Aug 13, 2012 at 11:04 AM, arun <[hidden email]> wrote:
>
>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$col2<-"N","L"))
>>dat1
>>      col1 col2
>>1     high    H
>>2     high    H
>>3     high    H
>>4 Neutral    N
>>5 Neutral    N
>>6 Neutral    N
>>7      low    L
>>8      low    L
>>9      low    L
>>10     low    L
>>
>>A.K.
>>
>>
>>
>>
>>
>>----- Original Message -----
>>From: Sachinthaka Abeywardana <[hidden email]>
>>To: [hidden email]
>>Cc:
>>Sent: Sunday, August 12, 2012 8:43 PM
>>Subject: [R] if else elseif for data frames
>>
>>Hi all,
>>
>>It seems like I cannot use normal 'if' for data frames. What would be the
>>best way to do the following.
>>
>>if data$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
>>
>>    [[alternative HTML version deleted]]
>>
>>______________________________________________
>>[hidden email] mailing list
>>https://stat.ethz.ch/mailman/listinfo/r-help
>>PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>>and provide commented, minimal, self-contained, reproducible code.
>>
>>
>

Rolf Turner-3

Re: if else elseif for data frames

In reply to this post by Sachinthaka Abeywardana

It seems to me that the "recode()" function from the "car" package
is what you need.

cheers,

Rolf Turner

On 13/08/12 13:07, Sachinthaka Abeywardana wrote:

> The thing is I have about 10 cases. I saw the ifelse statement but was
> wondering if there was a cleaner method of doing it. The coding will get
> really messy when I write all 10 cases.
>
> Cheers,
> Sachin
>
> On Mon, Aug 13, 2012 at 11:04 AM, arun <[hidden email]> wrote:
>
>> 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$col2<-"N","L"))
>> dat1
>> col1 col2
>> 1 high H
>> 2 high H
>> 3 high H
>> 4 Neutral N
>> 5 Neutral N
>> 6 Neutral N
>> 7 low L
>> 8 low L
>> 9 low L
>> 10 low L
>>
>> A.K.
>>
>>
>>
>>
>> ----- Original Message -----
>> From: Sachinthaka Abeywardana <[hidden email]>
>> To: [hidden email]
>> Cc:
>> Sent: Sunday, August 12, 2012 8:43 PM
>> Subject: [R] if else elseif for data frames
>>
>> Hi all,
>>
>> It seems like I cannot use normal 'if' for data frames. What would be the
>> best way to do the following.
>>
>> if data$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
>>
>> [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> [hidden email] mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> [hidden email] mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

jholtman

Re: if else elseif for data frames

In reply to this post by Sachinthaka Abeywardana

You might look at the 'recode' that is part of the 'car' package. You
can also setup a dataframe with two columns; one with the current
value and one with the new value you want, then you can use 'merge' or
'match' to create your new column. If you have provided some sample
data, I could have provided examples, but now left as an exercise for
the reader.

On Sun, Aug 12, 2012 at 9:07 PM, Sachinthaka Abeywardana
<[hidden email]> wrote:

> The thing is I have about 10 cases. I saw the ifelse statement but was
> wondering if there was a cleaner method of doing it. The coding will get
> really messy when I write all 10 cases.
>
> Cheers,
> Sachin
>
> On Mon, Aug 13, 2012 at 11:04 AM, arun <[hidden email]> wrote:
>
>> 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$col2<-"N","L"))
>> dat1
>> col1 col2
>> 1 high H
>> 2 high H
>> 3 high H
>> 4 Neutral N
>> 5 Neutral N
>> 6 Neutral N
>> 7 low L
>> 8 low L
>> 9 low L
>> 10 low L
>>
>> A.K.
>>
>>
>>
>>
>> ----- Original Message -----
>> From: Sachinthaka Abeywardana <[hidden email]>
>> To: [hidden email]
>> Cc:
>> Sent: Sunday, August 12, 2012 8:43 PM
>> Subject: [R] if else elseif for data frames
>>
>> Hi all,
>>
>> It seems like I cannot use normal 'if' for data frames. What would be the
>> best way to do the following.
>>
>> if data$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
>>
>> [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> [hidden email] mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>>
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> [hidden email] mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

--
Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

Jeff Newmiller

Re: if else elseif for data frames

Maybe the cut function?

?cut
---------------------------------------------------------------------------
Jeff Newmiller The ..... ..... Go Live...
DCN:<[hidden email]> Basics: ##.#. ##.#. Live Go...
Live: OO#.. Dead: OO#.. Playing
Research Engineer (Solar/Batteries O.O#. #.O#. with
/Software/Embedded Controllers) .OO#. .OO#. rocks...1k
---------------------------------------------------------------------------
Sent from my phone. Please excuse my brevity.

jim holtman <[hidden email]> wrote:

>You might look at the 'recode' that is part of the 'car' package. You
>can also setup a dataframe with two columns; one with the current
>value and one with the new value you want, then you can use 'merge' or
>'match' to create your new column. If you have provided some sample
>data, I could have provided examples, but now left as an exercise for
>the reader.
>
>On Sun, Aug 12, 2012 at 9:07 PM, Sachinthaka Abeywardana
><[hidden email]> wrote:
>> The thing is I have about 10 cases. I saw the ifelse statement but
>was
>> wondering if there was a cleaner method of doing it. The coding will
>get
>> really messy when I write all 10 cases.
>>
>> Cheers,
>> Sachin
>>
>> On Mon, Aug 13, 2012 at 11:04 AM, arun <[hidden email]>
>wrote:
>>
>>> 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$col2<-"N","L"))
>>> dat1
>>> col1 col2
>>> 1 high H
>>> 2 high H
>>> 3 high H
>>> 4 Neutral N
>>> 5 Neutral N
>>> 6 Neutral N
>>> 7 low L
>>> 8 low L
>>> 9 low L
>>> 10 low L
>>>
>>> A.K.
>>>
>>>
>>>
>>>
>>> ----- Original Message -----
>>> From: Sachinthaka Abeywardana <[hidden email]>
>>> To: [hidden email]
>>> Cc:
>>> Sent: Sunday, August 12, 2012 8:43 PM
>>> Subject: [R] if else elseif for data frames
>>>
>>> Hi all,
>>>
>>> It seems like I cannot use normal 'if' for data frames. What would
>be the
>>> best way to do the following.
>>>
>>> if data$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
>>>
>>> [[alternative HTML version deleted]]
>>>
>>> ______________________________________________
>>> [hidden email] mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide
>>> http://www.R-project.org/posting-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
>>>
>>>
>>
>> [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> [hidden email] mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
>
>
>--
>Jim Holtman
>Data Munger Guru
>
>What is the problem that you are trying to solve?
>Tell me what you want to do, not how you want to do it.
>
>______________________________________________
>[hidden email] mailing list
>https://stat.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide
>http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.

David Winsemius

Re: if else elseif for data frames

In reply to this post by Sachinthaka Abeywardana

On Aug 12, 2012, at 5:43 PM, Sachinthaka Abeywardana wrote:

> 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.

Using arun's example, dat1:

dat1$col2 <- c("H","N", "L","warn")[
match(dat1$col1, c("low", "Neutral", "high"),
nomatch=4 )]

> dat1
col1 col2
1 high L
2 high L
3 high L
4 Neutral N
5 Neutral N
6 Neutral N
7 low H
8 low H
9 low H
10 low H

Nested ifelse constructions would be quite inefficient. I'm not even
sure that a 10-deep ifelse construction woul be acceptable to the
interpreter. At one point I thought I read something about a nesting
depth of 7 as being a limit. (But many years have passed since that
reading and it's possible it's just a manufactured memory or that the
limit has been raised.)

--

David Winsemius, MD
Alameda, CA, USA

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

Michael Weylandt

Re: if else elseif for data frames

In reply to this post by Sachinthaka Abeywardana

On Sun, Aug 12, 2012 at 8:07 PM, Sachinthaka Abeywardana
<[hidden email]> wrote:
> The thing is I have about 10 cases. I saw the ifelse statement

Note that there is no "ifelse" statement: there is only nested if/else of forms

if

else if

else if

else ....

> but was
> wondering if there was a cleaner method of doing it. The coding will get
> really messy when I write all 10 cases.
>
> Cheers,
> Sachin
>

Possibly look at ?switch

Michael

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

PIKAL Petr

Re: if else elseif for data frames

In reply to this post by Sachinthaka Abeywardana

Hi

What about creating a new column with same factor and just chase its levels.

dat2$col2<-dat2$col1
> levels(dat2$col2)
[1] "high" "low" "Neutral"
> levels(dat2$col2)<-c("H", "L","N")
> dat2
col1 col2
1 high H
2 Neutral N
3 Neutral N
4 low L
5 high H
6 low L
7 low L
8 Neutral N
9 Neutral N
10 high H

Regards
Petr

>
>
> The thing is I have about 10 cases. I saw the ifelse statement but was
> wondering if there was a cleaner method of doing it. The coding will
> get really messy when I write all 10 cases.
>
> Cheers,
> Sachin
>
> On Mon, Aug 13, 2012 at 11:04 AM, arun <[hidden email]> wrote:
>
> > 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$col2<-"N","L"))
> > dat1
> > col1 col2
> > 1 high H
> > 2 high H
> > 3 high H
> > 4 Neutral N
> > 5 Neutral N
> > 6 Neutral N
> > 7 low L
> > 8 low L
> > 9 low L
> > 10 low L
> >
> > A.K.
> >
> >
> >
> >
> > ----- Original Message -----
> > From: Sachinthaka Abeywardana <[hidden email]>
> > To: [hidden email]
> > Cc:
> > Sent: Sunday, August 12, 2012 8:43 PM
> > Subject: [R] if else elseif for data frames
> >
> > Hi all,
> >
> > It seems like I cannot use normal 'if' for data frames. What would be
> > the best way to do the following.
> >
> > if data$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
> >
> > [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > [hidden email] mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> > http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> >
> >
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> [hidden email] mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-
> guide.html
> and provide commented, minimal, self-contained, reproducible code.