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20000704: RCM script produces no echoes

Chris,

The problem likely stems from the pqact.conf pattern action that is being used 
to
store the data in the rcm file. The best pattern would use the /pRCM tag to
ensure all the observations in the file are RCM's...at the time I created the
www page, not all of our top level NOAAPORT ingestors were adding the pil tag,
so I couldn't use that. Now,  I see that several FTM messages are in that
group. I would suggest:

HDS     ^SDUS4[0-6] .... ([0-3][0-9])([0-2][0-9])([0-5][0-9]).*/pRCM


The actual problem is that my loop exits at the first bulletin that is not a 
RCM.
I should be more lenient.

This can be corrected in $NAWIPS/unidata/programs/gprcm/rcm.c by changing
the while loop to a while and if loop starting line ~783:

   while((get_nextbull(fp,bultin,&lenbul) == 0)&&(isrcm(bultin,lenbul) == 0))
      {
      NEXINDX = get_ndex(bultin,lenbul);
      if(NEXINDX >= 0)
         {
         clat = RADARS[NEXINDX].stnlat; clon = RADARS[NEXINDX].stnlon;
         read_nexaa(bultin,lenbul,RADARS,NEXINDX,&new_time,trange,&mode,&valid);
         if(mode > MDNA) RADARS[NEXINDX].mode = mode;
         if((valid == 0)&&(mode > MDNE)) /* should only do precip and clear air 
*/
            read_nexcc(bultin,lenbul,RADARS,NEXINDX,&new_time,trange);
         }
      }


to:

   while(get_nextbull(fp,bultin,&lenbul) == 0)
      {
      if(isrcm(bultin,lenbul) == 0)
         {
         NEXINDX = get_ndex(bultin,lenbul);
         if(NEXINDX >= 0)
            {
            clat = RADARS[NEXINDX].stnlat; clon = RADARS[NEXINDX].stnlon;
            
read_nexaa(bultin,lenbul,RADARS,NEXINDX,&new_time,trange,&mode,&valid);
            if(mode > MDNA) RADARS[NEXINDX].mode = mode;
            if((valid == 0)&&(mode > MDNE)) /* should only do precip and clear 
air */
               read_nexcc(bultin,lenbul,RADARS,NEXINDX,&new_time,trange);
            }
         }
      }

If you make this change, simply recompile with:

cd $NAWIPS/unidata/programs/gprcm
make clean
make all
make install
make clean

Let me know what you find.

Steve Chiswell
Unidata User Support


>From: address@hidden (Chris Hennon)
>Organization: UCAR/Unidata
>Keywords: 200007041641.e64Gf5T01802

>Steve -
>
>I have a csh script which produces a RCM image.  I run it from the cron at
>00 and 30 past the hour, 24 hours a day.  50% of the time it runs
>flawlessly, 50% of the time it completes successfully but creates a map
>with no echoes on it.  The log file looks exactly the same, whether it
>produces echoes or not:
>
> Parameters requested:
>MAP,GAREA,PROJ,SATFIL,RADFIL,LATLON,PANEL,TITLE,TEXT,
>
>CLEAR,DEVICE,RCMFIL,RADTIM,RADDUR,DITHER,MESO,TVS,CNTR,MAXTOP,RADINFO,ECHO,
> CLRBAR.
> GEMPAK-GPRCM> GEMPAK-GPRCM> GEMPAK-GPRCM> GEMPAK-GPRCM> GEMPAK-GPRCM>
>GEMPAK-GPRCM> GEMPAK-GPRCM>
>GEMPAK-GPRCM> GEMPAK-GPRCM> GEMPAK-GPRCM> GEMPAK-GPRCM> GEMPAK-GPRCM>
>GEMPAK-GPRCM> GEMPAK-GPRCM> G
>EMPAK-GPRCM> GEMPAK-GPRCM> GEMPAK-GPRCM> GEMPAK-GPRCM> GEMPAK-GPRCM>
>GEMPAK-GPRCM> GEMPAK-GPRCM> GE
>MPAK-GPRCM> GEMPAK-GPRCM> GPMAP PARAMETERS:
>
> Device:              gf|/usr/local/apache/htdocs/rcm/national.gif
> Projection:          STR/90.0;-95.0;0.0
> Graphics area name:  17.89;-116.2;50.0;-59.3
> Map:                 4
> Title:               31/+1/Radar Summary (dbz) - echo tops (x100 ft)
>000704/1630
> Panel:               0
> Latlon:              0
> Clear:               YES
>Enter <cr> to accept parameters or type EXIT:EAX Meso01 LLF
> Parameters requested:
>MAP,GAREA,PROJ,SATFIL,RADFIL,LATLON,PANEL,TITLE,TEXT,
>
>CLEAR,DEVICE,RCMFIL,RADTIM,RADDUR,DITHER,MESO,TVS,CNTR,MAXTOP,RADINFO,ECHO,
> CLRBAR.
> GEMPAK-GPRCM>
>
>My script is based on your example script posted on the webpage.  Has
>there been a change to the rcm decoder or rcm format that I may have
>missed?  Thanks for any ideas.
>
>Chris
>
>