if "data" was your data.frame, data[4:length(data)] was also a
data.frame.
but, c(data[4:length(data)] ) coerces it to a list.
therefore coppie is a list.
coppie[1] is also a list of length 1...
compare that to: coppie[[1]]
b
On Feb 11, 2008, at 10:38 AM, milton ruser wrote:
Ciao Paolo,
How about you show some row of your data?
How many columns have your data.frame? One?
By the way "data" is not a so good name for your data frame.
We will be very happy to help you
Kindly,
Miltinho
Brasile
On 2/11/08, Paolo Grillo <[EMAIL PROTECTED]> wrote:
Hi all
I have this problem:
In my database .dta, called "data" I have five rows
data<-read.dta("C:\\2_CO_mmobile_ALL_Rid.dta")
# From this database I wuold like to create another
coppie<-c(data[4:length(data)])
but I find this
# Length of original data
length(data[,4])
5 RIGHT!!
# Length of new data
length(coppie[1])
1 WHY??
Thank you all for your help
Paolo Grillo
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