Dear all,

I have a time series of daily measurements that starts like this:

KWhourly[1:10,]
       Date     Time Value
01/01/13 00:00:00   1.6
01/01/13 01:00:00   1.6
01/01/13 02:00:00   1.6
01/01/13 03:00:00   1.6
01/01/13 04:00:00   1.6
01/01/13 05:00:00   1.6
01/01/13 06:00:00   1.6
01/01/13 07:00:00   1.6
01/01/13 08:00:00   1.6
01/01/13 09:00:00   1.6

I am trying to get average daily, monthly, yearly values using the zoo package.

My series starts at 01/01/13 00:00:00   and ends at   12/31/05 23:00:00

I create the zoo object:

#z <- zoo(KWhourly$Value,chron(KWhourly$Date, KWhourly$Time))

but then z starts at:
start(z)
[1] (01/01/30 00:00:00)

and ends at:

end(z)
[1] (12/31/29 23:00:00)

instead of going from 01/01/13 to 12/31/05

any ideas why this is happening and how to fix it?

I really appreciate your help


Christina K.
Columbia University
ck4545@gmail.com
P Please consider the environment - Do you really need to print this email?




	[[alternative HTML version deleted]]

