On Wed, 13 Jul 2005, Deepak Muricken wrote: > I am trying to use gretl for modeling daily data as opposed to > yearly data. That should be possible. > I feel that this is possible as one of the sample data (file data > 10-2), hourly load and temperature data seem to be compatible for > time series analysis. The data is an hourly information. That's a bit different: hourly data is "intra-day" rather than daily. > What I have with me is daily observation which I wish to use in > the format given below. > > obs (meaning) > 8:01 1 st of August > 8:02 > ....... > 8::30 30 th of August The problem here is that, in gretl, the observation syntax "X:Y" -- where "X" indicates a "major" period and "Y" a "minor" period -- works only when the frequency or periodicity is constant. For example, it works if X indexes a year and Y a quarter; or X indexes a year and Y a month; or X indexes a day and Y an hour.