[R] Concatenating data frame

From: Charles Cheung <boom2k1_at_hotmail.com>
Date: Thu 11 May 2006 - 07:42:38 EST

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 the ever growing existing data because in

existingRecords<-rbind(existingRecords, aNewRecordToBeAdded),

I am making a copy of the data each time rbind is called!

Is there a way to avoid these data copying?

Thank you in advance!


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