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mulholland
2008 Jul 29
1
combining zoo series with an overlapping index?
...structure(c("m/d/y",
"h:m:s"), .Names = c("dates", "times")), origin = structure(c(1,
1, 1970), .Names = c("month", "day", "year")), class = c("chron",
"dates", "times")), class = "zoo")
#Mullholland ER daytime
# extract section of interest
w <- window(day, start=chron("6/8/6", "4:16:0"), end=chron("6/8/6",
"20:31:0"))
# zap all interior points with NA's and then fill back in using linear
interpolation
lin <- na.approx(replace(w, time(w) >...