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Re: 20010416: Importing ship format data

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  • Subject: Re: 20010416: Importing ship format data
  • Date: Mon, 14 May 2001 12:29:04 -0600
Jimmy,

Your PARM line in storms.txt should be: PARM = SLAT;SLON;WIND
eg:

PARM = SLAT;SLON;WIND

STN     DATTIM         SLAT  SLON     WIND
BONN    980819/1200    14.7  -48.1    25
BONN    980819/1800    15.4  -50.1    30
BONN    980820/0000    16.2  -52.2    30
BONN    980820/0600    16.9  -54.7    30
<etc>

Now, create the file with sfprmf=wind as folows:


 SFOUTF   = storms.gem
 SFPRMF   = wind
 STNFIL   =  
 SHIPFL   = y
 TIMSTN   = /500
 SFFSRC   =  
 GEMPAK-SFCFIL>r

 SFCFIL PARAMETERS: 

 New surface file:      storms.gem                                              
    
 Parameter file:        wind                                                    
    
 Station file:                                                                  
    
 Number of stations in STNFIL:       0
 Number of additional stations:    500
 Total number of stations:         500
 Total number of times:              1

 This file will be a ship file.

Enter <cr> to accept parameters or type EXIT:
 Parameters requested: SFOUTF,SFPRMF,STNFIL,SHIPFL,TIMSTN,SFFSRC.
 GEMPAK-SFCFIL>


Then run sfedit:

 SFEFIL    Surface edit file                 storms.txt
 SFFILE    Surface data file                 storms.gem
 Parameters requested: SFEFIL,SFFILE.
 GEMPAK-SFEDIT>r

 SFEDIT PARAMETERS: 

 Edit file:           storms.txt                                                
                                                                      
 Output surface file: storms.gem                                                
              

 Parameters to be added to file:

 SLAT SLON WIND
Enter <cr> to accept parameters or type EXIT:
 Parameters requested: SFEFIL,SFFILE.
 GEMPAK-SFEDIT>


Steve Chiswell
Unidata User Support



On Mon, 14 May 2001, J. Correia wrote:

> hi again-
> i did this like you told me in the email below...and it worked...but we
> made a mistake in the data file, and upon correction, we are getting
> errors in that it says there are no times when we try to list the data in
> sflist. from the sfedit program we got an error about ship file lat/lon
> pair missing...
> i have a feeling i have to reinitialize the program somehow...but deleting
> the gemglb and last.nts files didnt work...any thoughts?
> jimmyc
> 
> On Mon, 16 Apr 2001, Steve Chiswell wrote:
> 
> >
> > Jimmy,
> >
> > The type of input file you have created in storms.txt is a SHIP
> > format surface file. That is, you have station ID's that move with
> > time (different slat/slon possitions for the same station id).
> >
> > So, start with creating a ship format file:
> >
> >  SFOUTF   = storms1.gem
> >  SFPRMF   = wind
> >  STNFIL   =
> >  SHIPFL   = y
> >  TIMSTN   = /500
> >  SFFSRC   =
> >  GEMPAK-SFCFIL>r
> >
> > Now you can use sfedit to read the data into the file.
> > Note that SFCFIL used only WIND as an expected parameter. That is
> > because slat and slon are already part of the surface file.
> >
> >  SFEFIL   = storms.txt
> >  SFFILE   = storms1.gem
> >  GEMPAK-SFEDIT>r
> >
> >  SFEDIT PARAMETERS:
> >
> >  Edit file:           storms.txt
> >  Output surface file: storms1.gem
> >
> >  Parameters to be added to file:
> >
> >  SLAT SLON WIND
> >
> > Now your data is in a ship format surface file. I can list it like:
> >  SFFILE   = storms1.gem
> >  AREA     = dset
> >  DATTIM   = all
> >  SFPARM   = dset
> >  OUTPUT   = t
> >  IDNTYP   = stid
> >  GEMPAK-SFLIST>r
> >  PARM = WIND
> >
> >     STN    YYMMDD/HHMM      WIND
> >    BONN    980819/1200     25.00
> >    DANI    980819/1200     25.00
> >    GEOR    980819/1200     30.00
> >    JEAN    980819/1200     30.00
> >    MITC    980819/1200     30.00
> >    CIND    980819/1200     30.00
> >    DENN    980819/1200     30.00
> > <etc.>
> >
> > Steve Chiswell
> > Unidata User Support
> >
> > On Wed, 11 Apr 2001, J. Correia wrote:
> >
> > > hi again-
> > > btw...thanks for all your help...the diagnostic calculations worked
> > > great..
> > > now on to creating data files in gempak
> > > my file storms.txt cant be opened by the sfedit program...i did get an
> > > earlier version of this file to open, but no data was written to the
> > > gempak file...
> > > i searched the archives and found one email where the user had siimiliar
> > > data and her file wouldnt open either...but i never saw a solution...as
> > > you were able to open and plot her data...
> > > any thoughts?
> > > thanks again.
> > > jimmyc
> > >
> > >
> >
> >
>