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tp1018110p1018110
2010 Jan 20
3
Deleting rows based on duplicate entries in one columns in a data matrix
Hi everybody,
I would like to delete rows based on duplicate entries in column 3 in the
data matrix X (size 60000 x 57). I have tried the unique(x) command as
> data <- X[unique(X[,3]),]
however, for some reason the command introduces a lot of NA's into the
dataset.
So, now I'm looking for a function that eliminates rows, if they have
duplicate values in column 3.
Does anyone