One option is to use table to get the number of repeats
tab<-table(tr1$time)==3
time3<-names(tab)[tab]
tr1[tr1$time%in%time3,]
Weidong Gu
On Sun, Oct 30, 2011 at 5:10 PM, Zheng Lu wrote:
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> With the following dataset, trl =1, 2,3, how to extract data with the time
> repeated 3 times. Fo
With the following dataset, trl =1, 2,3, how to extract data with the time
repeated 3 times. For example, I am only interested in the data records with
time repeated 3 times. time=0.1 only has 1 time, we don't want it, time=0.3
only has two times, we don't want it, and so on. Thanks a lot.
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