search for: ssfamean

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column selection for aggregate()
2010 Jan 18
2
column selection for aggregate()
...[13] "HAsfc4" "HAsfc9" "HAsfc16" "HAsfc25" "HAsfc36" "HAsfc49" [19] "HAsfc64" "HAsfc81" "HAsfc100" "HAsfc121" "Tfv" "Ftfv" I want to aggregate that way: ssfamean <- aggregate(ssfa[c("Asfc", "Smc", "epLsar", "HAsfc4", "HAsfc9", "HAsfc16", "HAsfc25", "HAsfc36", "HAsfc49", "HAsfc64", "HAsfc81", "HAsfc100", "HAsfc121", "Tfv...