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20010509: help for gdradr

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  • Subject: 20010509: help for gdradr
  • Date: Wed, 9 May 2001 12:48:25 -0600
Kevin,

Configuration for file templates for nmap2 (and the rest of GEMPAK) is
$GEMTBL/config/datatype.tbl.

I have 2 templates already in the file "NEXR" and "NEXL". NEXR refers to
the US mosaic I created, and NEXL to the local mosaic. The NEXR template
for instance is: $GEMDATA/radar/YYYYMMDD_radr.gem You will have to
modify these according to your data locations.

When using NMAP2, selection data type "grid" will  have selections for
nexr and nexl using the $GEMTBL/nmap/mod_res.tbl entries:
!  NEXRAD Level III Mosaic
Radar_Reflectivity     $NMAP_RESTORE/radar/nexr/n0r radar nexr;nexl
Radar_Reflectivity_qc  $NMAP_RESTORE/radar/nexr/n0r_qc radar nexr;nexl


After selectin nexr in the GRID data type in NMAP2, you will get a list of times
in the gridded data files of radar data. You can simply choose the most recent
time in the list at the top. After clicking on a time, you will see
a product group called "radar", then the two products listed above.
The first should plot slightly faster since it just using the filled grid blocks
in gdplot2 for the data. The second "qc" uses the standard filled contours in
gdplot2. (you can plot the radar data using gdplot2 (or any other "GD" program 
as well.

Once you have selected the product, such as Radar_Reflectivity_qc and clicked
on Accept, you will see the time line with the data times available.
A loop of 4 radar grids (360,000 points) for me takes about 30 seconds to
display.

Steve Chiswell
Unidata User Support



On Wed, 9 May 2001, Kevin Polston wrote:

> Hey Steve (or do you prefer Chiz?),
> 
> I've got another quick question for you.  I am still working on getting a 
> display
> for the gdradr program. I followed the examples in the help file and I
> succesfully created a radr.gem file. However.....it is at this point that I am
> unsure of what to do next to get a display. Do I need to run another program 
> to
> get the gridded radar file to display or should I be able to see it after 
> running
> the program initially? When I tried to look at it in GARP or NMAP nothing 
> showed
> up. So if you could give me the "final steps" as to what to do then I think I
> could get it displayed.
> 
> Also, what and where is the file(s) to configure NMAP2?  I have tried to run 
> the
> program but after I click on a particular data type it is not showing me any
> available data. I am able to use NMAP just fine however.
> 
> Thanks,
> 
> KP
> 
> 
>