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...anguage (it is the first time I use it) so if You could also explain to me what every function and argument means, it would be great help to then reiterate the procedure. Thank You very much, Sebastiano -- View this message in context: http://www.nabble.com/Extracting-random-rows-from-a-dataset-tp21530539p21530539.html Sent from the R help mailing list archive at Nabble.com.