It appears that these are time series (i.e. there is only one value of
River Mile in any one data frame) so if that's right you would be better
off representing them as time series. Using zoo:
> library(zoo)
> feb06.z <- zoo(feb06[,2], feb06[,1])
> may06.z <- zoo(may06[,2], may06[,1])
> jun06.z <
merge can only merge two objects at a time- I would like to merge more than
two objects at a time.
s.d <- structure(list(RiverMile = c(202L, 198L, 190L, 185L, 179L, 148L,
119L, 61L)), .Names = "RiverMile", row.names = c(NA, -8L), class =
"data.frame")
#s.d is all of the river miles that can occur
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