Re: new user: multiple file question

[Jaison Kurian <jaison@xxxxxxxxxxxxxxxxxx>]

Hi Chris,
            In user manual multiple files/descriptor files are described  
in two sections;

	Ch2  Sec2.1. Multi-file NetCDF data sets
	Ch10 Sec4.   CREATING A MULTI-FILE NETCDF DATA SET

	From these two sections you can get the basic details of
descriptor file used to access multiple netcdf data files. 

   Remember :
		name the descriptor file with .des extension
		open using  "set data **.des"    
 
 Have a look at the attached descriptor file for 
	daily data ( hence D_TIME_UNIT   = 86400.0 , in seconds ) 
	yearly netcdf files ( S_END - S_START = 365 for non-leap year )

 
 hope this helps.....

With Regards 

Jaison



On Tue, 24 Feb 2004, Chris Anderson wrote:

> 
> Hi,
> 
> I would like to use the multiple file option in ferret.
> Does documentation exist of all record variables that exist?  I have seen 
> what appears to be the bare minimum in the online users manual; did I miss 
> a more extensive explanation in there?
> 
> Chris
> --------------
> Chris Anderson
> Doctoral Candidate
> Agricultural Meteorology
> Iowa State University
> 
 &FORMAT_RECORD
  D_TYPE        =  '  MC',
  D_FORMAT      =  '  1A',
 /
 &BACKGROUND_RECORD
  D_EXPNUM      = 'NSWRS',
  D_MODNUM      =  '    ',
  D_TITLE       =  'NCEP SW DATA',
  D_T0TIME      = '31-DEC-1974 00:00',
  D_TIME_UNIT   = 86400.0,
  D_TIME_MODULO = .FALSE.,
 /
 &MESSAGE_RECORD
  D_MESSAGE     =  '    ',
  D_ALERT_ON_OPEN      = F,
  D_ALERT_ON_OUTPUT    = F,
 /
 &EXTRA_RECORD
 /
 &STEPFILE_RECORD
  S_FILENAME      ='/user1/DATA/ncep/nswrs.sfc.gauss.1975.nc'
  S_AUX_SET_NUM   = 0,
  S_START  =    1,
  S_END    =  365,
  S_DELTA  = 1,
  S_NUM_OF_FILES  =   1,
 /
 &STEPFILE_RECORD
  S_FILENAME      ='/user1/DATA/ncep/nswrs.sfc.gauss.1976.nc'
  S_AUX_SET_NUM   = 0,
  S_START  =  366,
  S_END    =  731,
  S_DELTA  = 1,
  S_NUM_OF_FILES  =   1,
 /
 &STEPFILE_RECORD
  S_FILENAME      ='/user1/DATA/ncep/nswrs.sfc.gauss.1977.nc'
  S_AUX_SET_NUM   = 0,
  S_START  =  732,
  S_END    = 1096,
  S_DELTA  = 1,
  S_NUM_OF_FILES  =   1,
 /
 &STEPFILE_RECORD
  S_FILENAME      ='/user1/DATA/ncep/nswrs.sfc.gauss.1978.nc'
  S_AUX_SET_NUM   = 0,
  S_START  = 1097,
  S_END    = 1461,
  S_DELTA  = 1,
  S_NUM_OF_FILES  =   1,
 /
 &STEPFILE_RECORD
  s_filename    = '**END OF STEPFILES**'
 /