PS to my last posting. An alternative to using a time offset would be to store the pixel time as an absolute time as well e.g.
> float obs(scan,pixel); // data variable > coordinates="pixeltime"; > double scan(scan); // time of scan start > scan:units="seconds since 2011-1-31"; > scan:standard_name="time"; > double pixeltime(scan,pixel); > pixeltime:units="seconds since 2011-1-31"; > pixeltime:standard_name="time"; This means each observation has two times: one for the start of its scan, and one for its pixel. You can obviously compute offsets by subtracting the scan- start time from the pixel-time. It depends on which you need more often, I suppose. Jonathan _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
