[GEMPAK #WPX-538404]: getting started

Steve,

Your gdinfo output shows that there is a problem with creating your
grid file as the times are not defined. That is your problem.

Output shoud look like:

  NUM       TIME1              TIME2           LEVL1 LEVL2  VCORD PARM
    1     060516/1200F000                          0         CLDT PRES        
    2     060516/1200F000                          0         CLDT HGHT        
    3     060516/1200F000                          0         CLDT TMPK        
    4     060516/1200F000                          0         CLDT BRTMP       
    5     060516/1200F000                          0         CLDL PRES        
etc....

Steve Chiswell
Unidata User Support



> > Thanks Steve for the information -- so far with GDCNTR, I am getting a 
> > blank terminal coming up, no contours.  gdinfo is showing:
> >
> > [skirby@mn1 wrf2gem_src]$ gdinfo
> > GDFILE    Grid file                         /home/skirby/wrf2gem_src/wrf.gem
> > LSTALL    Full list flag                    yes
> > OUTPUT    Output device/filename            t
> > GDATTIM   Grid date/time                    all
> > GLEVEL    Grid level                        all
> > GVCORD    Grid vertical coordinate          all
> > GFUNC     Scalar grid                       all
> > Parameters requested: GDFILE,LSTALL,OUTPUT,GDATTIM,GLEVEL,GVCORD,GFUNC.
> > GEMPAK-GDINFO>gdfile=/home/skirby/wrf2gem_src/wrf.gem
> > GEMPAK-GDINFO>restore defaults/gdinfo
> > GEMPAK-GDINFO>r
> >
> > GRID FILE: /home/skirby/wrf2gem_src/wrf.gem
> >
> >
> > GRID NAVIGATION:
> > PROJECTION:          LCC
> > ANGLES:                32.3  -106.9    32.3
> > GRID SIZE:          143 143
> > LL CORNER:              28.38   -111.27
> > UR CORNER:              36.03   -102.19
> >
> > GRID ANALYSIS BLOCK:
> > UNKNOWN ANALYSIS TYPE
> >
> > Number of grids in file:  3381
> >
> > Maximum number of grids in file:   4000
> >
> > NUM       TIME1              TIME2           LEVL1 LEVL2  VCORD PARM
> > 1                                              2         HAGL TMPK
> > 2                                              2         HAGL MIXR
> > 3                                           9965         SGMA PBAR
> > 4                                           9965         SGMA PP
> > 5                                           9865         SGMA PBAR
> > 6                                           9865         SGMA PP
> >
> > ...
> > 333                                           1000         PRES UREL
> > 334                                           1000         PRES VREL
> > 335                                           1000         PRES W
> > 336                                           1000         PRES HGHT
> > 337                                           1000         PRES SPFH
> > 338                                            950         PRES TMPK
> > 339                                            950         PRES UREL
> > 340                                            950         PRES VREL
> > 341                                            950         PRES W
> > 342                                            950         PRES HGHT
> > 343                                            950         PRES SPFH
> >
> > so there are height above ground level params, sigma level params, and 
> > pressure level params.  I don't see anything about time information.  Is 
> > there none or do I need a different program to get it?  When I use 
> > gdattim=fall it says that time is invalid.  My script is:
> > ===========================================================
> > gdcntr << eof
> >
> > gdattim=fall
> > glevel=500
> > gvcord=pres
> > gfunc=tmpc
> > gdfile=/home/skirby/wrf2gem_src/wrf.gem
> > cint=1
> > line=
> > map=
> > title=
> > device=xw
> > satfil=
> > radfil=
> > proj=lcc
> > garea=28.4;-111.2;36.0;-102.7
> > clear=
> > panel=0
> > text=
> > scale=
> > latlon=0
> > clrbar=
> > contur=3/0
> > skip=0
> > fint=0
> > fline=
> > ctype=c
> >
> > run
> >
> >
> > eof
> > =============================================================
> >
> > Let me know if you spot anything wrong.  I've tried defaulting gdattim, by 
> > leaving it equal to blank, but no success there either.
> >
> > Best regards,
> > Steve
> >
> >
> >
> > Unidata GEMPAK Support <address@hidden> wrote:
> > > Steve,
> > >
> > > Thanks that fixed that problem.
> > >
> > > If I may ask one more simple one: I am trying gdcntr on some wrf data 
> > > converted to gempak format. I have tried gdattime=all, gdattime=f00, 
> > > gdattime=f24 and it doesn't like any of them, always saying TIME is 
> > > invalid. I don't get it, since the gempak file is derived from a WRF 24h 
> > > forecast. What is the best way, in gempak, to look at my gempak file to 
> > > see what times are actually in it? I tried gdinfo but it only gave grid 
> > > dimensions? TIA.
> > >
> > > Regards,
> > > Steve
> > >
> >
> > Steve,
> >
> > The parameter for GDCNTR is GDATTIM (no "E" at the end). If you are typing 
> > gdattime, then the program
> > won't recognize that parameter. Generally, gdattim=fall would be a loop of 
> > available times. if
> > you are unsure about what your data file contains, run GDINFO then
> > at the prompt, type "restore defaults/gdinfo" and then "run" to see a
> > listing of all grids in your file.
> >
> > Steve Chiswell
> > Unidata User Support
> >
> > Ticket Details
> > ===================
> > Ticket ID: WPX-538404
> > Department: Support GEMPAK
> > Priority: Normal
> > Status: Closed
> >
> >
> >
> >
> > ---------------------------------
> > How low will we go? Check out Yahoo! Messenger&#65533;s low  PC-to-Phone 
> > call rates.
> >
> 


Ticket Details
===================
Ticket ID: WPX-538404
Department: Support GEMPAK
Priority: Normal
Status: Closed