search for: tp1596777p1596777

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2010 Mar 17
2
How can I return rows from a data frame with maximum value by factor?
...ax (DATE_TIME). Thus, the resulting subset would be the original eleven columns by 21 rows (one for each level of my FISH_ID). Any advice would be greatly appreciated. Nick -- View this message in context: http://n4.nabble.com/How-can-I-return-rows-from-a-data-frame-with-maximum-value-by-factor-tp1596777p1596777.html Sent from the R help mailing list archive at Nabble.com.