Removing a row from a data frame by setting it to NULL

Question

We can remove an item from the list using a null assignment:

someList<-list(1,2,3)
someList[2]<-NULL

the same is possible for columns of a data frame, as it is a list object:

someDf<-data.frame(a=1:4,b=2:5)
someDf$a<-NULL

Is it possible to do the same for rows of a data frame or matrix? (I'm looking for a quick method to exclude rows, I cannot vectorize because of the nature of my algorithm, much of which consists of deleting rows, I cannot copy data due to too large a size)

Answer 1

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