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52.524493
2010 Jul 16
2
aggregate(...) with multiple functions
hi all - i'm just wondering what sort of code people write to
essentially performa an aggregate call, but with different functions
being applied to the various columns.
for example, if i have a data frame x and would like to marginalize by
a factor f for the rows, but apply mean() to col1 and median() to
col2.
if i wanted to apply mean() to both columns, i would call:
aggregate(x, list(f),