I would like to clarify that since each observation is obtained every 28 days, each such observation is a 4-week average
thanks On 6/16/12, stef salvez <loggy...@googlemail.com> wrote: > I have a panel data set (in MS excel) like the one below > > > 1 "23/11/08" 2 > 1 "28/12/08" 3 > 1 "25/01/09" 4 > 1 "22/02/09" 5 > 1 "29/03/09" 6 > 1 "26/04/09" 32 > 1 "24/05/09" 23 > 1 "28/06/09" 32 > 2 "26/10/08" 45 > 2 "23/11/08" 46 > 2 "21/12/08" 90 > 2 "18/01/09" 54 > 2 "15/02/09" 65 > 2 "16/03/09" 77 > 2 "12/04/09" 7 > 2 "10/05/09" 6 > > > > > the start and end date of the time series for countries 1 and 2 are > different. For example, for country 1 the time series begins on > "23/11/08" while for country 2 the time series begins on "26-10-2008”. > > My data on prices are available every 28 days (or equivalently every 4 > weeks). But in some cases I have jumps (35 days or 29 days instead of > 28 days). For example from the above table we have such jumps: from > "28/12/08" to "28/12/08" , from 22/02/09" to "29/03/09", etc > > My goal is to have a unified sequence of dates across countries. So, > to achieve this I want to apply the following solutions > > I want to take what I have and calculate monthly average prices and also > report how many prices those averages are based on. I suppose that I > will still have gaps and may well need to interpolate. > > Please, I would be grateful to you if you could provide the exact code > for doing this > > > thanks a lot > ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
