Hi,
 
I have several time series that I need to plot on the same plot.
There are 3 problems with these series:
1. they do not start or end at the same times
2. they have different time intervals (seconds, minutes or hours)
3. they all have random missing time steps of a few step to longer
periods of several days
 
The data is imported from a database as POSIXct so that the first column
holds the date-time format like: " 2007-09-05 15:42:00", and the rest of
the data is numeric.
 
I am thinking of creating a new time series (ts) with the smallest time
interval (seconds) that will cover the max length of the time period,
and try to put the existing data I have onto that series, so that
missing data will be skiped. 
 
The question is how to match the time steps from the original series to
the new time series?
 
Thanks,
Ilan
AQRD
Environment Canada

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