MATLAB: Creating timeseries using date num

datenum

I want to create a time series of daily values, in which daily values are reported at 12times/day. Hence the series altogether should have a 4380 values. I tried this way in a first attempt:
   data=datenum(2007,1,1,0,0,[0:2:24-1].'):datenum(2007,12,31,0,0,[0:2:24-1].');
However, the result is only 365 values. Any help?

Best Answer

The datenum function returns days and fractions of days.
Try this:
data = datenum(2007,1,1,0,0,0) : 1/12 : datenum(2007,12,31,23,59,59); 
Check = datevec([data(1:3)'; data(end-2:end)'])                         % Check Results
Check =
        2007           1           1           0           0           0
        2007           1           1           2           0           0
        2007           1           1           4           0           0
        2007          12          31          18           0           0
        2007          12          31          20           0           0
        2007          12          31          22           0           0
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