[gradsusr] netcdf - descriptor file ctl

Celso Bandeira de Melo Ribeiro celso.bandeira at ufjf.edu.br
Mon Oct 7 16:38:35 EDT 2013 

Hello Jennifer,
It worked perfectly!
Thank you for your help.
Best wishes.
Celso


On Mon, 7 Oct 2013 09:58:21 -0400, Jennifer Adams <jma at cola.iges.org>
wrote:
> Use another coordinate variable name in your TDEF entry and provide all
> the metadata that GrADS will need, like this:
> TDEF rows 5 linear jan2000 1mo
> --Jennifer
> 
> 
> On Oct 6, 2013, at 11:27 PM, Celso Bandeira de Melo Ribeiro wrote:
> 
>> Hi Muhammed,
>> 
>> Thank you.
>> I tried how you suggested but appear the follow information:
>> 
>> celso1234 at ubuntu:~/basededados/ET$ ncdump -h ET_2000M02.nc
>> netcdf ET_2000M02 {
>> dimensions:
>> 	rows = 651 ;
>> 	length = 526 ;
>> variables:
>> 	double ET(length, rows) ;
>> }
>> celso1234 at ubuntu:~/basededados/ET$
>> 
>> But don't appear any information about time.
>> 
>> It could be some problem in ET_2002.nc file?
>> 
>> Best regards.
>> Celso
>> 
>> 
>> On Mon, 7 Oct 2013 10:32:12 +0800, Muhammad Yunus Ahmad Mazuki
>> <ukm.yunus at gmail.com> wrote:
>>> I believe that it should be:
>>> ncdump -h a.nc
>>> 
>>> 
>>> On Mon, Oct 7, 2013 at 9:54 AM, Celso Bandeira de Melo Ribeiro <
>>> celso.bandeira at ufjf.edu.br> wrote:
>>> 
>>>> Hi Muhammed,
>>>> Hi Andrew,
>>>> Thanks for your attention.
>>>> 
>>>> I tried to use "t" against "time" (like: TDEF t 5 linear Jan2000
1mo),
>>>> but
>>>> it doesn't work.
>>>> And I tried to use ncdump (like: ncdump -t ET_2000M01.cn) to
discovery
>>>> what the variable used in the sdf file but it showed me all the
values
>> of
>>>> variable in the file and doesn't show me the time of variable.
>>>> Maybe my files (ET_2000M01.cn, ET_2000M02.cn,...) have some problem
>> with
>>>> time.
>>>> I am attaching one(ET_2000M2.nc) file.
>>>> 
>>>> The descriptor file that I am using is:
>>>> 
>>>> DSET ^ET_20%y2M%m2.nc
>>>> OPTIONS template
>>>> UNDEF 0
>>>> YDEF length 526 LINEAR -20.25 0.05
>>>> XDEF rows 651 LINEAR -80.05 0.05
>>>> TDEF t 5 linear Jan2000 1mo
>>>> VARS 1
>>>> ET=>et 0 t,x,y ET
>>>> ENDVARS
>>>> 
>>>> And the error message that appear is:
>>>> 
>>>> ga-> xdfopen amazon_ok1.ctl
>>>> Scanning Descriptor File:  amazon_ok1.ctl
>>>> gadsdf: Time dimension t is not an SDF dimension.
>>>> SDF Descriptor file amazon_ok1.ctl was not successfully opened &
>> parsed.
>>>> ga->
>>>> 
>>>> Could you help me to check the time in this files?
>>>> I appreciate your help.
>>>> Celso
>>>> 
>>>> 
>>>> 
>>>> On Sun, 6 Oct 2013 10:43:11 +0800, Muhammad Yunus Ahmad Mazuki
>>>> <ukm.yunus at gmail.com> wrote:
>>>>> I think the error is in the tdef line, when I used xdfopen to
>> template
>>>>> files that can be used with sdfopen, I used
>>>>> tdef time 5 linear Jan2000 1mo
>>>>> The 'time' term addition refers to the variable used in the sdf
file.
>> I
>>>>> have seen netcdf file using 't' instead of time, so it may be
>> different
>>>> for
>>>>> your case. You can also see what term your .nc files are using by
>> using
>>>>> ncdump.
>>>>> 
>>>>> 
>>>>> On Sun, Oct 6, 2013 at 9:59 AM, Celso Bandeira de Melo Ribeiro <
>>>>> celso.bandeira at ufjf.edu.br> wrote:
>>>>> 
>>>>>> Hello Andrew,
>>>>>> 
>>>>>> I need a little more help with descriptor file (ctl).
>>>>>> 
>>>>>> I can open the file NetCDF one-by-one, using the descriptor file
>> that
>>>> you
>>>>>> sent me, p.ex.:
>>>>>> 
>>>>>> DSET ^ET_2000M02.nc
>>>>>> UNDEF 0
>>>>>> YDEF length 526 LINEAR -20.25 0.05
>>>>>> XDEF rows 651 LINEAR -80.05 0.05
>>>>>> VARS 1
>>>>>> ET=>et 0 x,y ET
>>>>>> ENDVARS
>>>>>> 
>>>>>> It works fine!
>>>>>> 
>>>>>> But when I try open using the template for different months
>>>>>> (ET_2000M01.nc, ET_2000M02.nc, ET_2000M03.nc, ..., ET_2000M05.nc)
it
>>>>>> doesn't work. The descriptor file that I am using is:
>>>>>> 
>>>>>> DSET ^ET_20%y2M%m2.nc
>>>>>> OPTIONS template
>>>>>> UNDEF 0
>>>>>> YDEF length 526 LINEAR -20.25 0.05
>>>>>> DTYPE netcdf
>>>>>> TDEF 5 linear Jan2000 1mo
>>>>>> VARS 1
>>>>>> ET=>et 0 t,x,y ET
>>>>>> ENDVARS
>>>>>> 
>>>>>> The error message that appear is:
>>>>>> 
>>>>>> ga-> xdfopen amazon_ok1.ctl
>>>>>> Scanning Descriptor File:  amazon_ok1.ctl
>>>>>> gadxdf error: Missing or invalid dimension size.
>>>>>>  --> The invalid description file record is:
>>>>>>  --> tdef 5 linear jan2000 1mo
>>>>>>  The data file was not opened.
>>>>>> ga->
>>>>>> 
>>>>>> Can anybody help me?
>>>>>> 
>>>>>> Thank you.
>>>>>> 
>>>>>> Celso
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> On Thu, 3 Oct 2013 16:17:59 -0700, Andrew Friedman
>>>>>> <andfried at berkeley.edu>
>>>>>> wrote:
>>>>>>> Glad to hear it worked!
>>>>>>> 
>>>>>>> On Oct 3, 2013, at 4:02 PM, Celso Bandeira de Melo Ribeiro
>>>>>>> <celso.bandeira at ufjf.edu.br> wrote:
>>>>>>> 
>>>>>>>> Hello Andrew,
>>>>>>>> It worked fine now.
>>>>>>>> Thank you for all the help and attention.
>>>>>>>> Best wishes.
>>>>>>>> Celso
>>>>>>>> 
>>>>>>>> 
>>>>>>>> On Thu, 3 Oct 2013 14:35:59 -0700, Andrew Friedman
>>>>>>>> <andfried at berkeley.edu>
>>>>>>>> wrote:
>>>>>>>>> Hi Celso,
>>>>>>>>> Try the attached control file. I made a couple of changes, but I
>>>>>>>>> think
>>>>>>>> the
>>>>>>>>> main issue was that your x and y dimensions were misplaced.
>>>>>>>>> Andrew
>>>>>>>> 
>>>>>> 
>>>>>> --
>>>>>> ____________________________________________
>>>>>> Prof. Celso Bandeira de Melo Ribeiro
>>>>>> Universidade Federal de Juiz de Fora - UFJF
>>>>>> Faculdade de Engenharia, Plataforma 4
>>>>>> Departamento de Engenharia Ambiental e Sanitaria
>>>>>> Bairro Martelos, Juiz de Fora (MG) CEP. 36036-900
>>>>>> tel. (32) 2102-3400
>>>>>> Visiting Scholar in Texas A&M University
>>>>>> _______________________________________________
>>>>>> gradsusr mailing list
>>>>>> gradsusr at gradsusr.org
>>>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>>>> 
>>>> 
>>>> --
>>>> _______________________________________________
>>>> gradsusr mailing list
>>>> gradsusr at gradsusr.org
>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>> 
>>>> 
>> 
>> -- 
>> ____________________________________________
>> Prof. Celso Bandeira de Melo Ribeiro
>> Universidade Federal de Juiz de Fora - UFJF
>> Faculdade de Engenharia, Plataforma 4
>> Departamento de Engenharia Ambiental e Sanitaria
>> Bairro Martelos, Juiz de Fora (MG) CEP. 36036-900
>> tel. (32) 2102-3400
>> Visiting Scholar in Texas A&M University
>> _______________________________________________
>> gradsusr mailing list
>> gradsusr at gradsusr.org
>> http://gradsusr.org/mailman/listinfo/gradsusr
> 
> --
> Jennifer M. Adams
> Center for Ocean-Land-Atmosphere Studies (COLA)
> 111 Research Hall, Mail Stop 2B3
> George Mason University
> 4400 University Drive
> Fairfax, VA 22030

More information about the gradsusr mailing list