sorting out the files

Hi,
I am trying to read multipled 3B42 hdf 3hourly files and write it out as a
single netcdf file. The problem I am coming across is due to the way the HDF
filenames are:

3B42.090609.0.6A.HDF
3B42.090609.12.6A.HDF
3B42.090609.15.6A.HDF
3B42.090609.18.6A.HDF
3B42.090609.21.6A.HDF
3B42.090609.3.6A.HDF
3B42.090609.6.6A.HDF

When I use systemfunc to list the files and read in, they do not appear in
sequential time order, like 0, 3, 6, 15, 18, 21 because of the size of hr
array in filename
so the data is stored in netcdf in different time order (0, 12, 15, 18, 21,
3, 6), which I want to correct.

Could you please kindly help me to sort out this issue.

Regards,
Prabhakar

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Received on Tue Apr 27 15:26:38 2010