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Re: [ferret_users] Problems saving a file



Hi Gaby,

You said you want to construct a daily mean dataset from
a four-hourly time series.  Without worrying about whether
memory is enough or not, you can use NCO if your original
data is in a netCDF file: In a pseudo code

  for day = 0 to numday-1
     lstart = day * 6
     lend   = istart + 5
     ncks -d time,$lstart,$lend  input.nc  oneday.nc
     ncra oneday.nc day$day.nc
  endfor
  ncrcat day0.nc day1.nc . . . output.nc
  rm day*.nc

The idea is that you extract one day (ncks),
average it (ncra), and collect all the days into
one file (ncrcat).

There may be more efficient solutions.  ncap2 might be
able to do 

Regards,
Ryo


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