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RE: Grib File
- Subject: RE: Grib File
- Date: Wed, 20 Jul 2005 11:26:32 -0600 (MDT)
On Wed, 20 Jul 2005, Nelson Brandon K A1C AFWA/SCSA wrote:
> Thanks again for your work Robb! Basicly what I am trying to do is pull out
> specifc parameters based on their parameter name/number, level type, and
> level.
Brandon,
have you looked at that web start program? it does all the tasks that you
mention and it will write out a file with only the desired paramters. i
will see if there is some more doc on how to use it. it's based on the
java grib.jar that you been working with.
robb...
Could you point me in the right direction in your code on how I
> might do this? Things like Grib1LookUp look promising but there isn't
> enough documentation (which is ok I know it's a beta ;)) for me to
> understand it as I am relatively new to grib files. Thanks for any further
> help!
>
> V/r
> Brandon
>
> -----Original Message-----
> From: Robb Kambic [mailto:address@hidden]
> Sent: Tuesday, July 19, 2005 3:20 PM
> To: Nelson Brandon K A1C AFWA/SCSA
> Cc: support-thredds; decoders
> Subject: RE: Grib File
>
>
> well, it looks like we did double the work. i also created a afwa.tab and
> added it tothe distribution. the new distribution is in the ftp decoders
> directory. let me know if you run into any problems.
>
> robb...
>
>
>
> On Tue, 19 Jul 2005, Nelson Brandon K A1C AFWA/SCSA wrote:
>
> > I have updated your grib table with all of the ones you stated were
> missing.
> > Let me know when you put this into the build so I can check it out and see
> > if there are anymore unknown parametes. Also it is not Air Force Global
> > Weather Center anymore. We are called Air Force Weather Agency!
> >
> > Thanks a bunch again Robb! Really been a help and I appreciate your time!
> >
> > --Brandon
> >
> > -----Original Message-----
> > From: Robb Kambic [mailto:address@hidden]
> > Sent: Monday, July 18, 2005 12:10 PM
> > To: Nelson Brandon K A1C AFWA/SCSA
> > Cc: support-thredds; decoders
> > Subject: RE: Grib File
> >
> >
> > Brandon,
> >
> > after viewing the data, i discovered many missing parameters. i couldn't
> > find these on the web, do you know a location for a table? or do you know
> > the name, short desc, long desc, and units for the following parameter
> > numbers.
> >
> > 134-137, 140-143, 145-149, 151, 152 155 157, 161, 163, 165-171, 191-194,
> > 197, 199, 208, 209, 220-223, 227, 228, 230-239, 241, 246, 248-254
> >
> > robb...
> >
> >
> >
> >
> >
> > On Mon, 18 Jul 2005, Robb Kambic wrote:
> >
> > > On Mon, 18 Jul 2005, Nelson Brandon K A1C AFWA/SCSA wrote:
> > >
> > > > It works! Thanks so much for your time Robb! I am going to poke
> around
> > in
> > > > the Java files but could you get me a pointer (excuse the programming
> > pun)
> > > > in the right direction as how to pull out specific parameters from a
> > grib
> > > > file? Thanks again!
> > >
> > >
> > > Brandon,
> > >
> > > you need to look at the index file, file ending with gbx. there a
> > > explanation of the fields, etc in the IndexFormat.txt file in the root
> dir
> > > of the distribution. the important fields are: BmsOrGdsOffset
> > > DecScale BmsExists. the last 4 fields on the product line ignoring the
> -1
> > > field. for instance product line:
> > >
> > > 1 0 -1 11 107 0 255 0 2005-07-07T00:00:00Z 0 3495848078 46890 70206 1
> > > false
> > >
> > > then the Grib1GetData will grab the data:
> > > java -Xmx256m ucar/grib/grib1/Grib1GetData data/us057g1010t04a000000000
> > > 46890 1 false
> > >
> > > will return the temperature data in K. the product name is from the 11
> > > the 4th field from the table gwc_2.tab.
> > >
> > > that's the hard way to extract the data.
> > >
> > > we have a webstart program called netcdf tools at:
> > >
> >
> http://my.unidata.ucar.edu/content/software/netcdf-java/v2.2/webstart/index.
> > html
> > >
> > > a quick way to view the data would be to click the viewer tab and then
> > > open the folder tab ( on the right side ) to select the data set to
> open.
> > > this tools works with netcdf, grib, and other types of data. there's
> even
> > > grid viewer if you select the grids tab, then open the dataset. there's
> a
> > > red icon on the right to select. the tools program is a test program we
> > > use, it's not really a product.
> > >
> > > robb...
> > >
> > > >
> > > > -----Original Message-----
> > > > From: Robb Kambic [mailto:address@hidden]
> > > > Sent: Friday, July 15, 2005 4:45 PM
> > > > To: Nelson Brandon K A1C AFWA/SCSA
> > > > Cc: decoders; support-thredds
> > > > Subject: RE: Grib File
> > > >
> > > > Brandon,
> > > >
> > > > are you sure you got the latest GribJava.tar.gz? the latest is:
> > > > 711461 Jul 11 14:12 GribJava.tar.gz
> > > >
> > > > i ran the following w/o any exceptions thrown.
> > > >
> > > > % java -Xmx256m ucar/grib/GribChecker data/us057g1010t04a000000000
> > > > % java -Xmx256m ucar/grib/grib1/Grib1Dump data/us057g1010t04a000000000
> |
> > > > more
> > > > % java -Xmx256m ucar/grib/grib1/Grib1Indexer
> > data/us057g1010t04a000000000
> > > > | more
> > > >
> > > > remember the CLASSPATH must be set to find the grib.jar, jpeg2000.jar,
> > and
> > > > junit.jar. if you still get exception let me know.
> > > >
> > > > robb...
> > > >
> > > >
> >
> ============================================================================
> > > > ===
> > > > Robb Kambic Unidata Program Center
> > > > Software Engineer III Univ. Corp for
> > Atmospheric
> > > > Research
> > > > address@hidden WWW: http://www.unidata.ucar.edu/
> > > >
> >
> ============================================================================
> > > > ===
> > > >
> > >
> > >
> >
> ============================================================================
> > ===
> > > Robb Kambic Unidata Program Center
> > > Software Engineer III Univ. Corp for
> Atmospheric
> > Research
> > > address@hidden WWW: http://www.unidata.ucar.edu/
> > >
> >
> ============================================================================
> > ===
> > >
> >
> >
> ============================================================================
> > ===
> > Robb Kambic Unidata Program Center
> > Software Engineer III Univ. Corp for Atmospheric
> > Research
> > address@hidden WWW: http://www.unidata.ucar.edu/
> >
> ============================================================================
> > ===
> >
> >
>
> ============================================================================
> ===
> Robb Kambic Unidata Program Center
> Software Engineer III Univ. Corp for Atmospheric
> Research
> address@hidden WWW: http://www.unidata.ucar.edu/
> ============================================================================
> ===
>
===============================================================================
Robb Kambic Unidata Program Center
Software Engineer III Univ. Corp for Atmospheric Research
address@hidden WWW: http://www.unidata.ucar.edu/
===============================================================================