[R] Join data frame columns

[arun]

Hi,
Try this:
set.seed(1)
df1<-data.frame(col1=rnorm(10,15),col2=rep(c("a","b"),5),col3=sample(1:50,10,replace=TRUE),col4=sample(LETTERS[1:10],10,replace=TRUE))

df2<-do.call(rbind,lapply(df1,function(x) data.frame(x)))
str(df2)
'data.frame':    40 obs. of  1 variable:
 $ x: chr  "14.3735461892577" "15.1836433242221" "14.16437138759" "16.5952808021378" ...
tail(df2)
#        x
#col4.5  I
#col4.6  G
#col4.7  H
#col4.8  B
#col4.9  H
#col4.10 E
 head(df2)
#                      x
#col1.1 14.3735461892577
#col1.2 15.1836433242221
#col1.3   14.16437138759
#col1.4 16.5952808021378
#col1.5 15.3295077718154
#col1.6  14.179531615882

A.K.


----- Original Message -----
From: brunosm <brunosm87 at gmail.com>
To: r-help at r-project.org
Cc: 
Sent: Tuesday, October 23, 2012 7:45 AM
Subject: [R] Join data frame columns

Hi,

I have a data frame with 100 variables (numeric and non numeric types), and
I want to join them in only one column, like a vector, but i want to keep
the non numeric variables like they are.

I know that i can do something like this:

Suppose that my data is in df variable

new_df<-data.frame(c(df[,1],df[,2],df[,3],df[,4],...........)

This works but i have 100 variables!

Any way of doing this a little bit faster?

Thanks a lot!





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