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dynamic aggregation of many variables
2006 Nov 15
1
dynamic aggregation of many variables
...d for every ID. many thanks & regards, christian week1 <- grep("(_PRO_001)",names(dmx3),perl=T) week1table <- subset(dmx3,select=c(ID,week1)) week2 <- grep("(_PRO_002)",names(dmx3),perl=T) week2table <- subset(dmx3,select=c(ID,week2)) week3 <- grep("(_PRO_003)",names(dmx3),perl=T) week3table <- subset(dmx3,select=c(ID,week3)) week4 <- grep("(_PRO_004)",names(dmx3),perl=T) week4table <- subset(dmx3,select=c(ID,week4)) mws <- (week1table[,2:117]+week2table[,2:117]+week3table[,2:117]+week4table[,2:117])/4