[R] if else elseif for data frames

[Rolf Turner]

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 <smartpink111 at yahoo.com> 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$col2<-"N","L"))
>> dat1
>>        col1 col2
>> 1     high    H
>> 2     high    H
>> 3     high    H
>> 4  Neutral    N
>> 5  Neutral    N
>> 6  Neutral    N
>> 7      low    L
>> 8      low    L
>> 9      low    L
>> 10     low    L
>>
>> A.K.
>>
>>
>>
>>
>> ----- Original Message -----
>> From: Sachinthaka Abeywardana <sachin.abeywardana at gmail.com>
>> To: r-help at r-project.org
>> Cc:
>> Sent: Sunday, August 12, 2012 8:43 PM
>> Subject: [R] if else elseif for data frames
>>
>> Hi all,
>>
>> It seems like I cannot use normal 'if' for data frames. What would be the
>> best way to do the following.
>>
>> if data$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
>>
>>      [[alternative HTML version deleted]]
>>
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>>
>>
> 	[[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org 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.
>