search for: dlev

...visage doing this with the following example code: morgan$fTime <- factor(substr(as.character(morgan$Time),1,10)) dflow <- tapply(morgan[,"flow"], morgan$fTime, mean) day <- tapply(morgan[,"Time"], morgan$fTime, mean) : : daily <- as.data.frame(cbind(day,dflow, dlev.morg,dlev.lock2, ...)) daily$day <- with(daily, as.POSIXct("1970-01-01", "%Y-%m-%d", tz="Australia/Adelaide") + day) rownames(daily) <- NULL Is there a more efficient way of doing this? I am running R-2.11.0 under Windows XP Tschüß Tony Meissner Principal Scie...