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My only suggestion is to build your own executable.This is not a trivial task, the makefiles in the source retrieved from NCEP site would need to be updated. There are dependencies on w3lib and g2lib, those libraries would have to be build first. I do know that version 1.4.1 does run on Centos6.
Let me know you want to go this route, I might be able to dig out makefiles I used to compile it.
George On 20/04/16 12:55 AM, Michelle Serino wrote:
That's good. Here's the info for my computer: CentOS release 6.7 (Final) LSB_VERSION=base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch CentOS release 6.7 (Final) CentOS release 6.7 (Final) Michelle M. Serino M.S. Candidate Texas A&M University Atmospheric Sciences Dept. Eller O&M, Suite 1017 College Station, TX 77843 (484) 769-0949On Tue, Apr 19, 2016 at 8:41 PM, George Trojan <george.trojan@xxxxxxxx <mailto:george.trojan@xxxxxxxx>> wrote:So grib2 file looks OK. Something wrong with cnvgrib. As I said before, I have had problems with cnvgrib in the past. If I recallcorrectly it had to do with default integer sizes 4 vs 8 bytes. What version of operating system are you using?On 20/04/16 12:11 AM, Michelle Serino wrote: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 <mailto: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 <mailto: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 <mailto: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 <tel:%28484%29%20769-0949> On Tue, Apr 19, 2016 at 6:49 PM, George Trojan - NOAA Federal <george.trojan@xxxxxxxx <mailto: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 <mailto: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 <tel:%28484%29%20769-0949> On Tue, Apr 19, 2016 at 6:00 PM, George Trojan - NOAA Federal <george.trojan@xxxxxxxx <mailto: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 <mailto: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 <tel:%28484%29%20769-0949> On Mon, Apr 18, 2016 at 1:52 AM, Michael Dross <mdross@xxxxxxxxxxxxxxxxxx <mailto: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 <mailto: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 <tel:%28484%29%20769-0949> _______________________________________________ ldm-users mailing list ldm-users@xxxxxxxxxxxxxxxx <mailto:ldm-users@xxxxxxxxxxxxxxxx> For list information or to unsubscribe, visit: http://www.unidata.ucar.edu/mailing_lists/
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