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20050614: 20050610: gpnexr2: problem with displaying level II data

>From: haldun <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200506141622.j5EGMdZu022712

>This is a multi-part message in MIME format.
>--------------070501020207050805010108
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>
>Dear Steve;
>thanks for the information. but still....
>1) I downloaded level II data (year 2003) through NCDC web  site, so I 
>assumed that it is ARCHIVE2 data.
>    or better how do i know it has ARCHIVE2. tag in the data header?

The first 9 bytes will be "ARCHIVE2.". These files do not have any station
location (eg lat/lon or station ID) in them, so the file name has to be used
to determine the station ID (eg the %SITE% template in the NEXRII
template). 

The more modern data files with have the first 9 bytes "AR2V0001.". These
files will have the station ID in bytes 21-24, so the file name does not have
to be used to plot the data at the correct location.



>2) If I use version 5.7.2.p2 (we have this version also) do I still need 
>to apply dcnexr2 to the level II data (with this name convention: 
>"KFSD_20030616_1700")?

The files downloaded from NCDC should be plain, so they do not need to
be unpacked by GEMPAK (or dcnexr2). The data distributed in real-time by the
IDD (eg NEXRD2 LDM feedtype) is compressed using bzip2. GEMPAK can read these
products in the compressed format since 5.7.2p2. Prior to that, the
products had to be uncompressed first using dcnexr2. One feature
of dcnexr2 was to add the station ID into empty bytes 21-24 using
the -s flag.


>3) last thing if the data resides under  /home/karan/temp/nexrad/       
>directory what should I type for radfil parameter?

Assuming your RAD environmental variable is set to
/home/karan/temp/nexrad
To use the NEXRII template as is provided in the distribution, your data files 
would
be $RAD/craft/%SITE%/%SITE%_YYYYMMDD_HHNN.

Thet is, your KFSD file would be:
$RAD/craft/KFSD/KFSD_20030616_1900

You can have your KFSD_20030616_1900 in your current working directory too, 
which
will be looked for, before looking in $RAD/craft/KFSD.

Steve Chiswell
Unidata User Support

>
>I really appreciate for your feedback. Thank you
>sincerely
>
>
>
>
>Unidata Support wrote:
>
>>Karan,
>>
>>You are running a version of gpnexr2 (5.7.1) before support was added to 
>>read bzip2 format data files, per release notes for 5.7.2p2 at:
>>http://my.unidata.ucar.edu/content/software/gempak/GEMPAK5.7/whats_new.html#5
> .7.2p2
>>
>>Prior to 5.7.2p2, you would need to uncompress the files using dcnexr2, so
>>if your files have not been uncompressed, you will not be able to view them
>>in the version of GEMPAK you are using. The current version is 5.8.2a.
>>
>>Also, TILT in the old release referred to the tilt number, and not the elevat
> ion angle
>>(which is now the supported format).
>>
>>The NEXRII alias will be expecting the files to reside under
>>$RAD/craft/KFSD
>>and the 2003 files should all have the ARCHIVE2. tag in the initial header of
>  the data.
>>
>>Steve Chiswell
>>Unidata User Support
>>
>>
>>
>>
>>  
>>
>>>From: haldun <address@hidden>
>>>Organization: UCAR/Unidata
>>>Keywords: 200506101408.j5AE8eZu029476
>>>    
>>>
>>
>>  
>>
>>>Hi;
>>>First of all I need to admit that I am very new on GEMPAK. I need to use 
>>>gpnexr2 to display
>>>KFSD level II data. What I did was first I rename the files as 
>>>following:  KFSD_20030616_1900
>>>Then I used the following parameters to display
>>>MAP      = 1
>>>GAREA    = 41.5;-99;45.5;-94.
>>>PROJ     = rad
>>>RADFIL   = NEXRII|KFSD
>>>LATLON   = 0
>>>PANEL    = 0
>>>TITLE    = 1
>>>TEXT     = 1
>>>CLEAR    = YES
>>>DEVICE   = XW
>>>LUTFIL   =
>>>IMCBAR   =
>>>TILT     = 0.5
>>>RADPARM  = dz
>>>RADTIM   = last
>>>
>>>
>>>but when I run the program I am getting the following messages. by the 
>>>way I am using Gempak 5.7.1
>>>thanks alot in advance
>>>
>>>GEMPAK-GPNEXR2>run
>>>Creating process: xw for queue 4849672
>>>GPMAP PARAMETERS:
>>>Device:              
>>>XW                                                                          
>   
>>>    
>>>
>>>Projection:          
>>>rad                                                                         
>   
>>>    
>>>
>>>Graphics area name:  
>>>41.5;-99;45.5;-94.                                                          
>   
>>>    
>>>
>>>Map:                 
>>>1                                                                           
>   
>>>    
>>>
>>>Title:               
>>>1                                                                           
>   
>>>    
>>>
>>>Panel:               
>>>0                                                                           
>   
>>>    
>>>
>>>Latlon:              
>>>0                                                                           
>   
>>>    
>>>
>>>Clear:               YES
>>>Image file:          
>>>./KFSD_20030616_2355                                                        
>   
>>>    
>>>
>>>Enter <cr> to accept parameters or type EXIT:
>>>   : No such file or directory
>>>wsr88d_to_radar: No valid site ID info found.
>>>[IM -3]  Image file ./KFSD_20030616_2355 not a supported format
>>>[IM -8]  Could not open LUT file ...
>>>[GEMPLT -15]  NIPROJ - Invalid projection specified.
>>>[GG -7]  No map drawn.
>>>
>>>
>>>
>>>
>>>  
>>>
>>>    
>>>
>>--
>>**************************************************************************** 
>>Unidata User Support                                    UCAR Unidata Program 
>>(303)497-8643                                                  P.O. Box 3000 
>>address@hidden                                   Boulder, CO 80307 
>>---------------------------------------------------------------------------- 
>>Unidata WWW Service              http://my.unidata.ucar.edu/content/support  
>>---------------------------------------------------------------------------- 
>>NOTE: All email exchanges with Unidata User Support are recorded in the
>>Unidata inquiry tracking system and then made publicly available
>>through the web.  If you do not want to have your interactions made
>>available in this way, you must let us know in each email you send to us.
>>
>>  
>>
>
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><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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>Dear Steve; <br>
>thanks for the information. but still....<br>
>1) I downloaded level II data (year 2003) through NCDC web&nbsp; site, so I
>assumed that it is ARCHIVE2 data. <br>
>&nbsp;&nbsp;&nbsp; or better how do i know it has ARCHIVE2. tag in the data he
> ader? <br>
>2) If I use version 5.7.2.p2 (we have this version also) do I still
>need to apply dcnexr2 to the level II data (with this name convention:
>"KFSD_20030616_1700")?<br>
>3) last thing if the data resides under&nbsp; /home/karan/temp/nexrad/&nbsp;&n
> bsp;&nbsp;&nbsp;&nbsp;&nbsp;
>directory what should I type for radfil parameter?<br>
><br>
>I really appreciate for your feedback. Thank you<br>
>sincerely<br>
><br>
><br>
><br>
><br>
>Unidata Support wrote:<br>
><blockquote type="cite"
> cite="address@hidden">
>  <pre wrap="">Karan,
>
>You are running a version of gpnexr2 (5.7.1) before support was added to 
>read bzip2 format data files, per release notes for 5.7.2p2 at:
><a class="moz-txt-link-freetext" href="http://my.unidata.ucar.edu/content/soft
> ware/gempak/GEMPAK5.7/whats_new.html#5.7.2p2">http://my.unidata.ucar.edu/cont
> ent/software/gempak/GEMPAK5.7/whats_new.html#5.7.2p2</a>
>
>Prior to 5.7.2p2, you would need to uncompress the files using dcnexr2, so
>if your files have not been uncompressed, you will not be able to view them
>in the version of GEMPAK you are using. The current version is 5.8.2a.
>
>Also, TILT in the old release referred to the tilt number, and not the elevati
> on angle
>(which is now the supported format).
>
>The NEXRII alias will be expecting the files to reside under
>$RAD/craft/KFSD
>and the 2003 files should all have the ARCHIVE2. tag in the initial header of 
> the data.
>
>Steve Chiswell
>Unidata User Support
>
>
>
>
>  </pre>
>  <blockquote type="cite">
>    <pre wrap="">From: haldun <a class="moz-txt-link-rfc2396E" href="mailto:ka
> address@hidden">&lt;address@hidden&gt;</a>
>Organization: UCAR/Unidata
>Keywords: 200506101408.j5AE8eZu029476
>    </pre>
>  </blockquote>
>  <pre wrap=""><!---->
>  </pre>
>  <blockquote type="cite">
>    <pre wrap="">Hi;
>First of all I need to admit that I am very new on GEMPAK. I need to use 
>gpnexr2 to display
>KFSD level II data. What I did was first I rename the files as 
>following:  KFSD_20030616_1900
>Then I used the following parameters to display
>MAP      = 1
>GAREA    = 41.5;-99;45.5;-94.
>PROJ     = rad
>RADFIL   = NEXRII|KFSD
>LATLON   = 0
>PANEL    = 0
>TITLE    = 1
>TEXT     = 1
>CLEAR    = YES
>DEVICE   = XW
>LUTFIL   =
>IMCBAR   =
>TILT     = 0.5
>RADPARM  = dz
>RADTIM   = last
>
>
>but when I run the program I am getting the following messages. by the 
>way I am using Gempak 5.7.1
>thanks alot in advance
>
>GEMPAK-GPNEXR2&gt;run
>Creating process: xw for queue 4849672
>GPMAP PARAMETERS:
>Device:              
>XW                                                                            
>    
>
>Projection:          
>rad                                                                           
>    
>
>Graphics area name:  
>41.5;-99;45.5;-94.                                                            
>    
>
>Map:                 
>1                                                                             
>    
>
>Title:               
>1                                                                             
>    
>
>Panel:               
>0                                                                             
>    
>
>Latlon:              
>0                                                                             
>    
>
>Clear:               YES
>Image file:          
>./KFSD_20030616_2355                                                          
>    
>
>Enter &lt;cr&gt; to accept parameters or type EXIT:
>   : No such file or directory
>wsr88d_to_radar: No valid site ID info found.
>[IM -3]  Image file ./KFSD_20030616_2355 not a supported format
>[IM -8]  Could not open LUT file ...
>[GEMPLT -15]  NIPROJ - Invalid projection specified.
>[GG -7]  No map drawn.
>
>
>
>
>  
>
>    </pre>
>  </blockquote>
>  <pre wrap=""><!---->--
>**************************************************************************** &
> lt;
>Unidata User Support                                    UCAR Unidata Program &
> lt;
>(303)497-8643                                                  P.O. Box 3000 &
> lt;
><a class="moz-txt-link-abbreviated" href="mailto:address@hidden";>sup
> address@hidden</a>                                   Boulder, CO 80307
>  &lt;
>---------------------------------------------------------------------------- &
> lt;
>Unidata WWW Service              <a class="moz-txt-link-freetext" href="http:/
> /my.unidata.ucar.edu/content/support">http://my.unidata.ucar.edu/content/supp
> ort</a>  &lt;
>---------------------------------------------------------------------------- &
> lt;
>NOTE: All email exchanges with Unidata User Support are recorded in the
>Unidata inquiry tracking system and then made publicly available
>through the web.  If you do not want to have your interactions made
>available in this way, you must let us know in each email you send to us.
>
>  </pre>
></blockquote>
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>
--
NOTE: All email exchanges with Unidata User Support are recorded in the
Unidata inquiry tracking system and then made publicly available
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available in this way, you must let us know in each email you send to us.