[R] Join data frame columns

[Ivan Calandra]

Hi again,

It seems that you want the modes to be conserved. This is just not 
possible; everything will be coerced to characters, as Rui highlighted.

But the question is why do you want to do this? You would loose helpful 
information (i.e. modes). Maybe there is a better way to do what you 
want to do.

HTH,
Ivan

--
Ivan CALANDRA
Université de Bourgogne
UMR CNRS/uB 6282 Biogéosciences
6 Boulevard Gabriel
21000 Dijon, FRANCE
+33(0)3.80.39.63.06
ivan.calandra at u-bourgogne.fr
http://biogeosciences.u-bourgogne.fr/calandra

Le 23/10/12 16:15, Rui Barradas a écrit :
> Hello,
>
> Sorry for my earlier post, I misunderstood what you want.
>
> dat <- data.frame(letters, 1:26)
> as.vector(sapply(d, as.character))
>
> Hope this helps,
>
> Rui Barradas
> Em 23-10-2012 14:13, brunosm escreveu:
>> Hi Ivan, thanks for your help!
>>
>> For example:
>>
>>> df
>>    num letters
>> 1   1       A
>> 2   2       B
>> 3   3       C
>> 4   4       D
>> 5   5       E
>>
>> What i want is to join "num" and "letters" in a single column. Something
>> like this
>>
>>> new_df
>> 1   1
>> 2   2
>> 3   3
>> 4   4
>> 5   5
>> 6  A
>> 7  B
>> 8  C
>> 9  D
>> 10  E
>>
>> I tried to do it with a list but it converts factors to numbers...
>>
>>> new_df<-list(c(df[,1],df[,2]))
>>> new_df
>> [[1]]
>>   [1] 1 2 3 4 5 1 2 3 4 5
>>
>> Thanks!
>>
>>
>>
>> -- 
>> View this message in context: 
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>> Sent from the R help mailing list archive at Nabble.com.
>>
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>
> ______________________________________________
> R-help at r-project.org mailing list
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> PLEASE do read the posting guide 
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>