[R] matching items in a data frame
Lee.Averell at newcastle.edu.au
Wed Jul 6 07:41:57 CEST 2011
I have a data frame with 2 columns, the first is an index of participants and the second is a list of words presented to the participant (see below).
Some of the words are presented to multiple participants others are not. I am trying to get an index of 1) which words are repeated and 2) how many times they are repeated. Any suggestions?
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