Just one other addition. If by monthly summary you mean a summary
that has an entry for each year/month combo rather than just one
entry for all Januaries, one entry for all Februaries etc. then try this
which works in both the Date and chron cases:
aggregate(z, as.yearmon, mean)
On Tue, Sep
Hello Everyone,I think this is a very simple problem, I have been struggling
with it for a few days now.
I have a 10-year daily data in the following format.
Date ABC D E
1978-10-22 18 20.64 0.0 0.176 -1.76
1978-10-23 15 17.06 0.4
Try this:
Lines - Date ABC D E
1978-10-22 18 20.64 0.0 0.176 -1.76
1978-10-23 15 17.06 0.4 0.147 2.52
1978-10-243 7.588 0.0 0.068 -6.86
1978-10-259 11.491 0.0 0.102-1.01
1978-10-26 13 14.98 1.4
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