Hello, everyone
I have the following problem:
Say I have an irregular zoo timeseries like this:
a <- zoo(rep(1:9), as.Date(c("2009-03-20", "2009-03-27", "2009-04-24",
"2009-04-25", "2009-04-30", "2009-05-15", "2009-05-22", "2009-05-29",
"2009-06-26")))
and I have regular zoo timeseries like this:
b <- zoo(rep(1:4), as.Date(c("2009-03-31", "2009-04-30", "2009-05-31",
"2009-06-30")))
>From "a" I need to extract those rows that hold values for the last
day of each month (creating series "c"). Then I have to merge these
values with "b", such that the result has the index of "c".
How could I do this most efficiently?
Thank you in advance!
Best,
Sergey
--
Simplicity is the last step of art./Bruce Lee
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