Hello,
I am trying to define a different interval for a "year". In hydrology,
a "water year" is defined as the period between October 1st and
September 30 of the following year. I was wondering how I might do
this in R. Say I have a data.frame like the following and I want to
extract a variable with the water year specs as defined above:
df<-data.frame(Date=seq(as.Date("2000/10/1"), as.Date("2003/9/30"), "days"))
## Extract the normal year
df$year <- factor(format(as.Date(df$Date), "%Y"))
So the question is how might I define a variable that extends from
October 1st to September 30th rather than the normal January 1st to
December 31st?
Thanks in advance!
Sam
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