Hi,
I have a preallocated dataframe to which I have to add a list whose vectors
will become rows in the dataframe. This is done iteratively. How can I do this?
I'm dealing with very large numbers...list of 1000 vectors to a dataframe of
20 iteratively
for e.g.
my list is as follows
ll-list(c(1,2,3),c(2,3,4))
ll
[[1]]
[1] 1 2 3
[[2]]
[1] 2 3 4
dd-data.frame(matrix(nrow=10,ncol=3))
dd
X1 X2 X3
1 NA NA NA
2 NA NA NA
3 NA NA NA
4 NA NA NA
5 NA NA NA
6 NA NA NA
7 NA NA NA
8 NA NA NA
9 NA NA NA
10 NA NA NA
dd[1,]-ll[[1]]
dd
X1 X2 X3
1 12
Hi,
This is not exactly the same, but there was a recent thread on
rbind()ing dataframes from a list:
http://r.789695.n4.nabble.com/Please-explain-do-call-in-this-context-or-critique-to-stack-this-list-faster-td2526908.html
Given that, I wonder if this would work for you:
ll -
Why don't you read the answers to your stackoverflow question?
http://stackoverflow.com/questions/3665885/adding-a-list-of-vectors-to-a-data-frame-in-r/3667753
Hadley
On Wed, Sep 8, 2010 at 1:17 AM, raje...@cse.iitm.ac.in
raje...@cse.iitm.ac.in wrote:
Hi,
I have a preallocated dataframe to
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