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Re: FW: Re: NCEP North American Reanalysis (fwd)
- Subject: Re: FW: Re: NCEP North American Reanalysis (fwd)
- Date: Thu, 21 Oct 2004 12:27:31 -0600 (MDT)
On Thu, 21 Oct 2004, Dan Swank wrote:
> Robb,
>
> No luck. I've recompiled the decoders package again and gribtocdl does
> the same thing.
> We have:
> netcdf-3.5.1 (built from source)
> udunits-1.11.7 ( Used binary installation since our system had
> trouble compiling this from source)
> decoders-2.3.8n ( built from source)
>
Dan,
that's a really old distribution of the decoders package. Your problem
sounds like a bug that was fixed back at that time. the latest decoders
package is decoders-3.0.5.tar.Z hopefully the newest distribution will fix
your problem.
robb...
> And the output from the compilation can be found here
> http://nomads.ncdc.noaa.gov/tmp/decoders-2.3.8n.logs.tar
>
> OS:
> Red Hat Linux release 7.3 (Valhalla)
>
> We also have a
> Red Hat Linux release 8.0 (Psyche)
> We can try this if you think it will really make much of a difference.
> Avbl but we dont' have root user on either of these so installing
> tpackages can be a bit tricky.
>
> If you need anymore information let me know.
>
> -Dan
>
>
>
> Robb Kambic wrote:
>
> >no need to include the others now...
> >
> >
> >On Wed, 20 Oct 2004, Dan Swank wrote:
> >
> >
> >
> >>Getting a little closer...
> >>
> >>Set the Env var and now udunits works as expected... however gribtocdl
> >>still gets stuck in an infinate loop and don't seem to work right.
> >>when i ran it on the narr-b GRIB it got to the following section
> >>
> >>
> >> // Navigation
> >> nav_model = "GRIB1" ;
> >> grid_type_code = 3 ;
> >> grid_type = "Lambert conformal projection" ;
> >> grid_name = " " ;
> >> grid_center = 7 ;
> >> grid_number = 221 ;
> >> i_dim = "lon" ;
> >> j_dim = "lat" ;
> >> Nx = 349 ;
> >> Ny = 277 ;
> >> La1 = 1.000000 ;
> >> Lo1 = -145.500000 ;
> >> Lov = -107.000000 ;
> >> Dx = 32463.000000 ;
> >> Dy = 32463.000000 ;
> >> // Pole in proj. plane = North ;
> >> centers = 1 ;
> >> Latin1 = 50.000000 ;
> >> Latin2 = 50.000000 ;
> >> Splat = 0.000000 ;
> >> SPlon = 0.000000 ;
> >> ResCompFlag = 0 ;
> >>
> >>
> >>
> >>
> >
> >if you notice the cdl i made didn't have lon and lats. there must be
> >something wrong with your gribtocdl build. for a test, i build the
> >decoders package on a linux box fedora 9 and gribtocdl created the cdl
> >fine. remake the distribution, if you can try it on another box. whats
> >your os?
> >
> >robb...
> >
> >
> >
> >
> >>lon = -145.50,-146.50,-147.50,-148.50,-149.50,-150.50,-151.50,-152.50,
> >> -153.50,-154.50,-155.50,-156.50,-157.50,-158.50,-159.50,-160.50,
> >> -161.50,-162.50,-163.50,-164.50,-165.50,-166.50,-167.50,-168.50,
> >>
> >>Then continues decrementing the longitue values and don't stop. I was
> >>forced to CNTL-C it and remove the lon section completely, putting the
> >>curly bracket at the end. Know why it might do this?
> >>After setting the env var, gribtonc successfully re-created narr.nc from
> >>the narr.cdl you supplied. However when I tried my CDL from above i get
> >>the following:
> >>
> >>./narr-b_221_20010101_0000_000.grb
> >>ncgen: narr-b2.cdl line 6: dimension length must be positive
> >>ncgen: narr-b2.cdl line 7: dimension length must be positive
> >>ncgen: narr-b2.cdl line 73: Nx not declared as a variable, fatal error
> >>
> >>Does gribtocdl require any ENV vars to be set?
> >>
> >>Appreciate the help.
> >>-Dan
> >>
> >>
> >>
> >>
> >>Robb Kambic wrote:
> >>
> >>
> >>
> >>>On Wed, 20 Oct 2004, Dan Swank wrote:
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>>I copied the narr.cdl file from the FTP and tried:
> >>>>
> >>>>gribtonc -v -l ./log -e ./error ./narr.cdl
> >>>>narr-b_221_20010101_0000_000.nc < narr-b_221_20010101_0000_000.grb
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>here's the process
> >>>
> >>># creates cdl file narr.cdl
> >>>% gribtocdl -v narr-b_221_20010101_0000_000.grb > narr.cdl
> >>>
> >>># creates netcdf file narr.nc in verbose mode, logging to screen
> >>>% gribtonc -vl - narr.cdl narr.nc < narr-b_221_20010101_0000_000.grb
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>>Result
> >>>>Segmentation fault
> >>>>
> >>>>
> >>>>
> >>>>
> >>>explained below, set UDUNITS_PATH
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>>and
> >>>>Oct 20 19:31:05 gribtonc[32594]: Starting Up
> >>>>in the ./log file.
> >>>>
> >>>>Any idea whats going on? It is likely gribtonc (or more likely one of
> >>>>its dependancies) is not installed correctly on our system (RedHat 7.3)
> >>>>Also, what did you use to create this CDL file? The data in cdl seems
> >>>>like a translation of the information in the grib PDS, reworked into a
> >>>>format that ncgen can understand.
> >>>>Any way i can get anymore debug information regarding this?
> >>>>
> >>>>Only hunch is that it is not happy with the udunits package
> >>>>
> >>>>-> /usr/local/udunits-1.11.7/udunits-1.11.7/bin/udunits
> >>>>udunits(3): Couldn't open units database "/upc/udunits/etc/udunits.dat":
> >>>>
> >>>>
> >>>>
> >>>>
> >>>ahh, that's the problem. udunits can't find udunits.dat either place
> >>>udunits.dat in dir /upc/udunits/etc/ or set environment var
> >>>
> >>>% setenv UDUNITS_PATH /your/udunits/path/udunits.dat
> >>>
> >>>replace /your/udunits/path/ with appropriate path
> >>>
> >>>robb...
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>>No such file or directory
> >>>>Segmentation fault
> >>>>
> >>>>But, while building the unidata decoders package it only seemed to want
> >>>>the .dat .a and .h files within these packages.
> >>>>Would this be the source of the problems?
> >>>>
> >>>>-Dan
> >>>>
> >>>>
> >>>>
> >>>>Robb Kambic wrote:
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>>Thanks russ for the clarification. i was assuming you were familar with
> >>>>>the decoders process. if i can answer any more questions let me know.
> >>>>>i'll
> >>>>>try to be more descriptive.
> >>>>>
> >>>>>robb...
> >>>>>
> >>>>>
> >>>>>On Tue, 19 Oct 2004, Dan Swank wrote:
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>Russ
> >>>>>>
> >>>>>>Actually, i was, at first, trying
> >>>>>>GRIB -( gribtocdl )-> CDL -( gribtonc )-> NetCDF
> >>>>>>Which i now understand is completely wrong, thanks for the help.
> >>>>>>As you have noticed, we are completely unfamiliar with these programs.
> >>>>>>
> >>>>>>Attempting it the correct way now, i'll let you know how it goes.
> >>>>>>
> >>>>>>-Dan
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>Russ Rew wrote:
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>>Robb,
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>>i downloaded the file from the last message, created a cdl, and
> >>>>>>>>decoded
> >>>>>>>>the grb file. there might be something wrong with Dan's decoders
> >>>>>>>>build or
> >>>>>>>>it could be a platform issue. this was done on a solaris box 5.9 The
> >>>>>>>>narr.cdl file is attached and the files narr.cdl, narr.grb, and
> >>>>>>>>narr.nc are
> >>>>>>>>in the Unidata's ftp dir at
> >>>>>>>>
> >>>>>>>>ftp unidata.ucar.edu
> >>>>>>>>
> >>>>>>>>% cd pub/contrib
> >>>>>>>>% mget narr*
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>Thanks Robb. The file sizes are:
> >>>>>>>
> >>>>>>>-rw-rw-r-- 1 rkambic ustaff 3486764 Oct 19 13:32 narr.nc
> >>>>>>>-rw-rw-r-- 1 rkambic ustaff 8560 Oct 19 13:32 narr.cdl
> >>>>>>>-rw-rw-r-- 1 rkambic ustaff 1398914 Oct 19 13:32 narr.grb
> >>>>>>>
> >>>>>>>so the netCDF file is about 2.5 times as big as the GRIB file.
> >>>>>>>
> >>>>>>>I'm guessing the source of the problem may come from using
> >>>>>>>
> >>>>>>>GRIB -> (via gribtocdl) -> CDL -> (via ncgen) -> netCDF
> >>>>>>>
> >>>>>>>(Using gribtocdl to generate a very large CDL file and then using ncgen
> >>>>>>>to convert that into a netCDF file.)
> >>>>>>>
> >>>>>>>I think Robb used the following tools instead:
> >>>>>>>
> >>>>>>>GRIB -> (via gribtocdl) -> CDL
> >>>>>>>GRIB and CDL -> (via gribtonc) -> netCDF
> >>>>>>>
> >>>>>>>(Using gribtocdl to generate a small CDL file describing structure of
> >>>>>>>the desired netCDF file and then using gribtonc to convert the GRIB
> >>>>>>>data into the netCDF file.)
> >>>>>>>
> >>>>>>>--Russ
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>--
> >>>>>>Dan Swank <address@hidden>
> >>>>>>NOMADS programmer
> >>>>>>STG, Incorporated - Government Contractor
> >>>>>>151 Patton Avenue, Room 514
> >>>>>>Asheville, NC 28801
> >>>>>>Phone: 828-271-4007
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>===============================================================================
> >>>>>Robb Kambic Unidata Program Center
> >>>>>Software Engineer III Univ. Corp for Atmospheric
> >>>>>Research
> >>>>>address@hidden WWW: http://www.unidata.ucar.edu/
> >>>>>===============================================================================
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>--
> >>>>Dan Swank <address@hidden>
> >>>>NOMADS programmer
> >>>>STG, Incorporated - Government Contractor
> >>>>151 Patton Avenue, Room 514
> >>>>Asheville, NC 28801
> >>>>Phone: 828-271-4007
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>===============================================================================
> >>>Robb Kambic Unidata Program Center
> >>>Software Engineer III Univ. Corp for Atmospheric
> >>>Research
> >>>address@hidden WWW: http://www.unidata.ucar.edu/
> >>>===============================================================================
> >>>
> >>>
> >>>
> >>>
> >>--
> >>Dan Swank <address@hidden>
> >>NOMADS programmer
> >>STG, Incorporated - Government Contractor
> >>151 Patton Avenue, Room 514
> >>Asheville, NC 28801
> >>Phone: 828-271-4007
> >>
> >>
> >>
> >>
> >
> >===============================================================================
> >Robb Kambic Unidata Program Center
> >Software Engineer III Univ. Corp for Atmospheric
> >Research
> >address@hidden WWW: http://www.unidata.ucar.edu/
> >===============================================================================
> >
> >
>
> --
> Dan Swank <address@hidden>
> NOMADS programmer
> STG, Incorporated - Government Contractor
> 151 Patton Avenue, Room 514
> Asheville, NC 28801
> Phone: 828-271-4007
>
>
===============================================================================
Robb Kambic Unidata Program Center
Software Engineer III Univ. Corp for Atmospheric Research
address@hidden WWW: http://www.unidata.ucar.edu/
===============================================================================