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[GEMPAK #CJD-380488]: two gempak questions about Level II radar

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  • Subject: [GEMPAK #CJD-380488]: two gempak questions about Level II radar
  • Date: Thu, 09 Oct 2014 13:25:56 -0600
> We're trying to produce some nice Level II radar product for our new
> interactive weather wall and can't seem to change the map outline colors,
> widths, etc.  We can change the boundary files we use, so we can get
> state, county, roads, etc., so $MAPFIL is interpreted correctly, but the
> parameters we specify for MAP are not being picked up.  We are running
> GEMPAK 7.1.0 from gempak-7.1.0-1.x86_64.rpm.  Changes to MAP work fine
> in other gempak program s.


Hi Clinton,

The new release GEMPAK 7.1.1 has fixed this map drawing error in gpnexr2.



> I forgot my second question.
> 
> IDV can plot 6 Level II parameters at various tilt level, but gempak can
> only do 3.  Are there plans to add the other three to gpnexr2?

How have you determined that gpnexr2 can only plot 3 tilt levels?  From the 
GEMPAK manual:

 TILT is the Radar beam elevation/tilt angle. TILT is a real number
   that specifies the mean sweep evelation that is closest to
   the specified value. If TILT is LIST, then the available levels will
   be displayed and the user will be prompted for a value.

Using TILT=list I see the following (for the latest from FTG):

Volume dz: Sweeps available 15
 1: elev 0.511856
 2: elev 0.518681
 3: elev 0.913925
 4: elev 0.914627
 5: elev 1.342075
 6: elev 1.353550
 7: elev 1.834625
 8: elev 0.520931
 9: elev 0.518829
10: elev 2.429428
11: elev 3.154656
12: elev 4.015533
13: elev 5.130753
14: elev 6.433868
15: elev 8.020187
Enter radar elevation angle or type EXIT:

So it seems only the closest real number input will display whichever tilt you 
desire.

Hope this answers your questions.

Michael James
Unidata Program Center
Boulder, CO

Ticket Details
===================
Ticket ID: CJD-380488
Department: Support GEMPAK
Priority: Emergency
Status: Open