08-29-2013 04:08 PM
I am student and a bit of a novice at SAS, so forgive me if this is a simple question.
The EXPAND procedure appears to interpolate missing data IN a time series but ignores missing values at the beginning or end of a series.
How, to I interpolate values at the beginning or end of a series?
I have over 800 time series that either start later or end sooner than I would like. While none appear to have missing data in the middle, I am trying to fill in the beginnings and ends to run some analysis. Thoughts?
Thanks in Advance!
08-29-2013 06:58 PM
I remember doing something this with PROC Arima long ago in a job far far away by asking for predicted values. However depending on the intervals of your time series and number of missing values you'll probably need to look closely to see if results are useable.
Need further help from the community? Please ask a new question.