Hello, I have searched through the R-help archive and find that the easiest
way to concatenate data records in a dataframe is to use rbind()
I know we can do that using rbind, but it is slow when we are doing rbind
thousands of times to a growing list, each time adding one or two records to
Put the intermediate results in a list and then use do.call:
result - list()
for (i in 1:100){
result[[i]] - data.frame(id=sample(letters,1), value=i)
}
newDataFrame - do.call('rbind', result)
On 5/10/06, Charles Cheung [EMAIL PROTECTED] wrote:
Hello, I have searched through the R-help
: jim holtman [EMAIL PROTECTED]
To: Charles Cheung [EMAIL PROTECTED]
CC: r-help@stat.math.ethz.ch
Subject: Re: [R] Concatenating data frame
Date: Wed, 10 May 2006 19:02:15 -0400
Put the intermediate results in a list and then use do.call:
result - list()
for (i in 1:100){
result[[i]] - data.frame
