Sorry about that. On the .grb2 file, I get: 492053148 21637412
ruc2anl_130_20090605_2200_000.grb2.
Thanks, too, for the cksum info.
Michelle M. Serino
M.S. Candidate
Texas A&M University
Atmospheric Sciences Dept.
Eller O&M, Suite 1017
College Station, TX 77843
(484) 769-0949
On Tue, Apr 19, 2016 at 7:10 PM, George Trojan - NOAA Federal <
george.trojan@xxxxxxxx> wrote:
> By the way, I asked for checksum on the GRIB2 file. We know the converted
> one is too short.
>
> On Tue, Apr 19, 2016 at 11:07 PM, George Trojan - NOAA Federal <
> george.trojan@xxxxxxxx> wrote:
>
>> Checksum value and file size. Google should be your friend:
>> https://en.wikipedia.org/wiki/Cksum
>>
>> I did have in the past issues with cnvgrib built on Centos 6 and recent
>> Fedora's. Before going into this, let's eliminate simple causes.
>>
>> On Tue, Apr 19, 2016 at 10:53 PM, Michelle Serino <mmserino@xxxxxxxx>
>> wrote:
>>
>>> I get:
>>>
>>> 942363691 228074 ruc2anl_130_20090605_2200_000.grb.
>>>
>>>
>>> What do those numbers represent? I am not familiar with the cksum
>>> command.
>>>
>>> Michelle M. Serino
>>> M.S. Candidate
>>> Texas A&M University
>>> Atmospheric Sciences Dept.
>>> Eller O&M, Suite 1017
>>> College Station, TX 77843
>>> (484) 769-0949
>>>
>>> On Tue, Apr 19, 2016 at 6:49 PM, George Trojan - NOAA Federal <
>>> george.trojan@xxxxxxxx> wrote:
>>>
>>>> Either the input file is corrupted, or your version of cnvgrib is bad.
>>>> Try this to eliminate the first possibility:
>>>>
>>>> $ cksum ruc2anl_130_20090605_2200_000.grb2
>>>> 492053148 21637412 ruc2anl_130_20090605_2200_000.grb2
>>>>
>>>> The numbers 492053148 21637412 should be the same.
>>>>
>>>>
>>>> On Tue, Apr 19, 2016 at 10:42 PM, Michelle Serino <mmserino@xxxxxxxx>
>>>> wrote:
>>>>
>>>>> When I do 'wgrib ruc2anl_130_20090605_2200_000.grb,' I get,
>>>>> '1:0:d=09060522:HGT:kpds5=7:kpds6=100:kpds7=1000:TR=1:P1=0:P2=0:TimeU=1:1000
>>>>> mb:anl:NAve=0,' and that is the only output. I am not sure exactly
>>>>> how to read that output and if that indicates that there is only one
>>>>> field.
>>>>>
>>>>> I got the length of the .grb file as only 228074 bytes: -rwxr-xr-x 1
>>>>> mserino 30490 228074 Apr 7 17:39 ruc2anl_130_20090605_2200_000.grb
>>>>>
>>>>> Michelle M. Serino
>>>>> M.S. Candidate
>>>>> Texas A&M University
>>>>> Atmospheric Sciences Dept.
>>>>> Eller O&M, Suite 1017
>>>>> College Station, TX 77843
>>>>> (484) 769-0949
>>>>>
>>>>> On Tue, Apr 19, 2016 at 6:00 PM, George Trojan - NOAA Federal <
>>>>> george.trojan@xxxxxxxx> wrote:
>>>>>
>>>>>> Does wgrib list only one field? I just ran convert on the same file.
>>>>>> There should be 317 data fields. What is the length of .grb file? I got
>>>>>> 65403248 bytes.
>>>>>>
>>>>>> George
>>>>>>
>>>>>> On Tue, Apr 19, 2016 at 9:31 PM, Michelle Serino <mmserino@xxxxxxxx>
>>>>>> wrote:
>>>>>>
>>>>>>> Thank you everyone for getting back to me.
>>>>>>>
>>>>>>> My apologies for not including the location of my data. I
>>>>>>> downloaded it from http://nomads.ncdc.noaa.gov/data/rucanl/ for the
>>>>>>> appropriate date and time. Let me respond to everyone's suggestions.
>>>>>>>
>>>>>>> 1. When I run:
>>>>>>>
>>>>>>> od -c ruc2anl_130_20090605_2200_000.grb | less
>>>>>>>
>>>>>>> I get output:
>>>>>>>
>>>>>>> 0000000 051107 041111 075003 000752 000000 001034 064407 100202
>>>>>>>
>>>>>>> 0000020 062007 164003 003011 013005 000400 000000 000001 000000
>>>>>>>
>>>>>>> 0000040 000025 000400 000000 000052 001777 141401 050401 037400
>>>>>>>
>>>>>>> 0000060 100631 135354 100410 014163 032000 000351 164464 040000,
>>>>>>> etc.
>>>>>>>
>>>>>>>
>>>>>>> 2. When I run:
>>>>>>>
>>>>>>>
>>>>>>> wgrib ruc2anl_130_20090605_2200_000.grb
>>>>>>>
>>>>>>>
>>>>>>> I get output:
>>>>>>>
>>>>>>>
>>>>>>> 1:0:d=09060522:HGT:kpds5=7:kpds6=100:kpds7=1000:TR=1:P1=0:P2=0:TimeU=1:1000
>>>>>>> mb:anl:NAve=0
>>>>>>>
>>>>>>> 3. When I run:
>>>>>>>
>>>>>>> wgrib -v ruc2anl_130_20090605_2200_000.grb
>>>>>>>
>>>>>>>
>>>>>>> I get similar output:
>>>>>>>
>>>>>>>
>>>>>>> 1:0:D=2009060522:HGT:1000 mb:kpds=7,100,1000:anl:winds in grid
>>>>>>> direction:"Geopotential height [gpm]
>>>>>>>
>>>>>>> 4. George, you mentioned that "It is possible that the program
>>>>>>> does not know about GRIB2 fields, specific to the office that created
>>>>>>> the
>>>>>>> file." By program, are you referring to the program I am using to
>>>>>>> process
>>>>>>> these data? Or are you referring to another program? I am not able to
>>>>>>> test the wgrib2 command at the moment because I do not have the
>>>>>>> permissions
>>>>>>> to install it (my advisor will have to do that).
>>>>>>>
>>>>>>>
>>>>>>> It appears that wgrib at least recognizes the *.grb file. Are the
>>>>>>> lists of the grids as they should be? Perhaps something small is
>>>>>>> getting
>>>>>>> lost in the conversion process that my processing code (using Warning
>>>>>>> Decision Support System - Integrated Information algorithms) cannot
>>>>>>> reconcile?
>>>>>>>
>>>>>>>
>>>>>>> Thank you for the continued help!
>>>>>>>
>>>>>>> Michelle
>>>>>>>
>>>>>>> Michelle M. Serino
>>>>>>> M.S. Candidate
>>>>>>> Texas A&M University
>>>>>>> Atmospheric Sciences Dept.
>>>>>>> Eller O&M, Suite 1017
>>>>>>> College Station, TX 77843
>>>>>>> (484) 769-0949
>>>>>>>
>>>>>>> On Mon, Apr 18, 2016 at 1:52 AM, Michael Dross <
>>>>>>> mdross@xxxxxxxxxxxxxxxxxx> wrote:
>>>>>>>
>>>>>>>> If you have wgrib installed do a
>>>>>>>>
>>>>>>>> wgrib -v ruc2anl_130_20090605_2200_000.grb
>>>>>>>>
>>>>>>>>
>>>>>>>> If it converted it correctly you should get a listing of the grids.
>>>>>>>> If not, something is amiss with the cnvgrib you have.
>>>>>>>>
>>>>>>>> - Mike
>>>>>>>>
>>>>>>>>
>>>>>>>> Sent from my iPad
>>>>>>>>
>>>>>>>> On Apr 17, 2016, at 9:11 PM, Michelle Serino <mmserino@xxxxxxxx>
>>>>>>>> wrote:
>>>>>>>>
>>>>>>>> Hi all,
>>>>>>>>
>>>>>>>> I am using NCAR's cnvgrib utility to convert grib2 RUC-Analysis
>>>>>>>> data to grib1. An example of one of these data files is below:
>>>>>>>>
>>>>>>>> ruc2anl_130_20090605_2200_000.grb2
>>>>>>>>
>>>>>>>> When I run the command,
>>>>>>>>
>>>>>>>> cnvgrib
>>>>>>>> -g21 ruc2anl_130_20090605_2200_000.grb2
>>>>>>>> ruc2anl_130_20090605_2200_000.grb
>>>>>>>>
>>>>>>>> the converting process seems to work. I get a file with an
>>>>>>>> extension of "grb." However, while the file type is listed as a data
>>>>>>>> file,
>>>>>>>> it appears green, as an executable file. In addition, the code I am
>>>>>>>> using
>>>>>>>> does not recognize the file as a grb1 file. (The code only recognizes
>>>>>>>> grb1
>>>>>>>> files.) The website to which I referred to use this utility (
>>>>>>>> http://blog.nssl.noaa.gov/wdssii/) did not list any additional
>>>>>>>> options to use besides the required '-g21.' Am I missing something?
>>>>>>>> This
>>>>>>>> is my first implementation of the cnvgrib utility, so I apologize if I
>>>>>>>> have
>>>>>>>> made a naive mistake. I appreciate any help.
>>>>>>>>
>>>>>>>> Best regards,
>>>>>>>>
>>>>>>>> Michelle Serino
>>>>>>>>
>>>>>>>> Michelle M. Serino
>>>>>>>> M.S. Candidate
>>>>>>>> Texas A&M University
>>>>>>>> Atmospheric Sciences Dept.
>>>>>>>> Eller O&M, Suite 1017
>>>>>>>> College Station, TX 77843
>>>>>>>> (484) 769-0949
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> ldm-users mailing list
>>>>>>>> ldm-users@xxxxxxxxxxxxxxxx
>>>>>>>> For list information or to unsubscribe, visit:
>>>>>>>> http://www.unidata.ucar.edu/mailing_lists/
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
