Re: [ferret_users] combine ncdf files with nc2mc.sh

[Martin Schmidt <martin.schmidt@xxxxxxxxxxxxxxxxx>]

Dear Estanis,

difficult to say. May it is the capital "J" in 01-Jan-1900 00:00:00. Anyway, recent ferret versions (guess > 7.0) offer a much more comfortable opportunity to concatenate files over a dimension, here the time axis. Please seach for "aggregation" in the ferret manual for a detailed description. Please find below a short script to be called like this:

go aggregate nemo*.nc

The kernel is the definition:

DEFINE DATA/AGGREGATE /T AggData=file_list

It is lightyears more comfortable than using descriptor files from many points of view.

Hope this helps,

Martin

$ cat aggregate.jnl
\cancel mode verify
! aggregate.jnl
! Description: Generate a time aggregation and open the files

! Usage:         arg1
! GO aggregate file list

! arg 1 - file list defined by wildcards

! Example:
! go aggregate RUN*/ocean_day.nc4
!
let file_list = SPAWN("ls -1 $1")
DEFINE DATA/AGGREGATE /T AggData=file_list
say "Defining data set AggData"
set mode/last verify

On 06/23/2017 08:13 PM, Estanislao Gavilan Pascual-Ahuir (PGR) wrote:

Dear Community,

I am trying to combine 2 ncdf files using nc2mc.sh. But I am having this error

ERROR: FORMAT OF units-ATTRIBUTE OF t NOT RECOGNIZED:

Thanks in advance for all your help.

 My descriptor file is:

 &FORMAT_RECORD
     D_TYPE        = '  MC',
     D_FORMAT      = '  1A',
     D_SOURCE_CLASS       = 'MODEL OUTPUT',
 /
 &BACKGROUND_RECORD
      D_EXPNUM      = 'Control',
      D_TITLE       = '',
      D_T0TIME      = '01-Jan-1900 00:00:00',
      D_TIME_UNIT   = 1.0,
      D_TIME_MODULO = .FALSE.,
 /
 &MESSAGE_RECORD
      D_MESSAGE     = ' ',
      D_ALERT_ON_OPEN      = F,
      D_ALERT_ON_OUTPUT    = F,
 /
 &EXTRA_RECORD
 /
 &STEPFILE_RECORD
       s_filename    = 'nemo1.nc',
       S_START       = 3471508800,
       S_END  = 4417156800,
       S_DELTA       = 432000,
       S_NUM_OF_FILES       = 1,
       S_REGVARFLAG  = ' ',
 /
 &STEPFILE_RECORD
       s_filename    = 'nemo2.nc',
       S_START       = 4417588800,
       S_END  = 6309316800,
       S_DELTA       = 432000,
       S_NUM_OF_FILES       = 1,
       S_REGVARFLAG  = ' ',
 /
 &STEPFILE_RECORD
       s_filename    = '**END OF STEPFILES**'
 /

Kind regards,

Estanis