search for: hasfc16

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2010 Jan 18
2
column selection for aggregate()
..."BONE" "TO_POS" "MEASUREM" "FACETTE" "SHEARFAC" [7] "ENA_BA" "SEL_FACET" "SEL_MEAS" "Asfc" "Smc" "epLsar" [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&quo...