[Vis5d-users] Re: Grib2v5d Question

Michael;

You can inventory and unpack your own grib files
using one of the grib unpack routines, say wgrib:
http://wesley.wwb.noaa.gov/reading_grib.html 
and
http://wesley.wwb.noaa.gov/wgrib.html
and use the standard v5d creation code example shown
in the vis5d README file.

If you are already familiar with the GEMPAK 
graphics package then it might be an option for you. 
I use the functionality in the "GEMPAK" 
graphics package (available from UNIDATA) and a v5d 
create extension first written by Scott Jacobs and 
modified by Keith Brill of NCEP. 
To get it see:
http://sgi62.wwb.noaa.gov:8080/research/gemvis.html
and some more info at 
http://sgi62.wwb.noaa.gov:8080/research/vis5d.html

It needs to have GEMPAK already running and then 
re-linking it with the gemvis object provided.  The advantage 
is the GEMPAK functionality, for example if you have 
the wind field and potential temperature at vertical 
levels in you GRIB file then you 
get the potential vorticity by the single line
mul(1.E6,pvor(thta,wnd))=potv 
and potv appears in the vis5d control panel.
Examples of v5d files made using this way can be found
at the above web page.

Good Luck

Jordan Alpert



kd...@me... wrote:
> 
> Does anybody know where I can get a Grib to v5d converter?
> 
> Michael Maxwell
> KD5GIV
> Fort Worth, Texas, USA
> Storm Spotter Tarrant County
> Future Storm Predition Center Forecaster