Message-ID: <1350999615.74829.YahooMailNeo@web142604.mail.bf1.yahoo.com>
Date: 2012-10-23T13:40:15Z
From: arun
Subject: Join data frame columns
In-Reply-To: <1350992746344-4647113.post@n4.nabble.com>
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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