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nodupecolumns
2009 Aug 11
1
Prevent sequential repeated values in data frame column
Hi,
I'm trying to randomize a sequence of trials for an experimental
design. The trials consist of values for each of two factors. As is
there are 30 combinations of the two factors, and I want them to be
ordered randomly but with the requirement that for one of the factors,
the value can never be the same as the previous value.
I'm currently randomizing my dataframe by using: