[R] Calculating proportions from a data frame rather than a table

Farrel Buchinsky fjbuch at gmail.com
Thu Oct 4 01:01:33 CEST 2007

Genius! Thank you very much.
Yes indeed I should have thought of that. For some reason I have a
mental blank about the use of row.names and instead I repeatedly put
that kind of data as a column in the data frame. Thank you for the

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