[ncl-talk] Joining files together with varying dimension sizes

[Guilherme Martins]

Try to reorder the dimensions with:

*ncpdq *-a time,pc tmp1.nc tmp2.nc

ncpdq is a NCO tool.

Guilherme.

Em ter, 26 de abr de 2016 às 16:33, Andrew Kren - NOAA Affiliate <
andrew.kren at noaa.gov> escreveu:

> I tried both just now. With CDO, it worked on some variables, because the
> time dimension on those was in the leftmost dimension. But the others, the
> variables I also need, has time in the rightmost dimension. Can CDO also
> work with this?
>
> On Tue, Apr 26, 2016 at 1:07 PM, Guido Cioni <guidocioni at gmail.com> wrote:
>
>> It shouldn't be a problem, along_track is still an integer as
>> dimension... Did you try with the command suggested on the webpage that I
>> sent you? Did you try with CDO, which sometime is smarter with
>> “complicated" files? Otherwise you can try to open the nc file with ncl or
>> fortran and manually modify the name of the dimensions to something more
>> default.
>>
>> Are you files big? Otherwise I can have a look On them and see what it's
>> working
>> Il 26 apr 2016 8:58 PM, "Andrew Kren - NOAA Affiliate" <
>> andrew.kren at noaa.gov> ha scritto:
>>
>> Hi Guido,
>>
>> I tried NCO, but it gave me this error, presumably because my time
>> coordinate is called "along_track" and not "time". Is there a workaround
>> for this?
>>
>> On Tue, Apr 26, 2016 at 11:27 AM, Guido Cioni <guidocioni at gmail.com>
>> wrote:
>>
>>> Hi Andrew,
>>> I would suggest you to merge data together BEFORE reading them into NCL.
>>> You can easily do that either with NCO and the command ncrcat (see here
>>> http://research.jisao.washington.edu/data_sets/nco/#example8) or using
>>> CDO with the merge option (see here for the complete guide
>>> https://www.rsmas.miami.edu/users/rajib/cdo.pdf). These methods will
>>> work *without* problems as long as you have a well-defined time
>>> coordinate in your files and the vertical levels are always the same.
>>> Cheers
>>>
>>> Guido Cioni
>>> http://guidocioni.altervista.org
>>>
>>>
>>>
>>>
>>> Il giorno 26 apr 2016, alle ore 19:22, Andrew Kren - NOAA Affiliate <
>>> andrew.kren at noaa.gov> ha scritto:
>>>
>>> Dear NCL Talk,
>>>
>>> I have data that is netcdf format of various aircraft microwave
>>> retrievals. These retrievals of temperature, moisture, etc, are in units of
>>> (lev,time) in each file. I want to join all of the files together so that I
>>> can compare the data to dropsondes. However, when I do the addfiles
>>> feature, and grab the data using temp_hamsr = factor*(short2flt(q[:]->ham_airT))-273.15,
>>> it gives me this error:
>>>
>>> warning:File
>>> /scratch4/BMC/shout/Andrew.Kren/hamsr_data/2011/HS3/L2/HAMSR_L2_20110908T185915_20110909T185423_v01.nc
>>> dimension sizes do not conform to others in list; skipping file
>>> warning:A valid instance of variable ham_airT was not found in one or
>>> more elements of the file list
>>>
>>> I know what this error means after looking it up online and on the NCL
>>> help page. It is because my leftmost dimension is not time (level instead),
>>> which is required to merge them together. Is there any workaround to do
>>> this, like reorder when reading in, with what format my data is in?
>>> Basically I want to make my code portable so I can join any number of files
>>> for a particular storm case, since not all cases have the same amount of
>>> time retrievals.
>>>
>>> I also attached an ncl_filedump output of the format of the data I am
>>> reading. The along track metadata refers to time dimension in this case.
>>>
>>> Thanks,
>>>
>>> --
>>> Andrew Kren, PhD
>>> Research Scientist I, Global Observing Systems Analysis (GOSA) Group
>>> NOAA ESRL Global Systems Division (Rm 3C515)
>>> 325 Broadway, Boulder, CO 80305
>>> (303) 497-5418
>>> <format_file.txt><compare_AVAPS_HAMSR_HS3_2011.ncl>
>>> _______________________________________________
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>>>
>>>
>>
>>
>> --
>> Andrew Kren, PhD
>> Research Scientist I, Global Observing Systems Analysis (GOSA) Group
>> NOAA ESRL Global Systems Division (Rm 3C515)
>> 325 Broadway, Boulder, CO 80305
>> (303) 497-5418
>>
>>
>
>
> --
> Andrew Kren, PhD
> Research Scientist I, Global Observing Systems Analysis (GOSA) Group
> NOAA ESRL Global Systems Division (Rm 3C515)
> 325 Broadway, Boulder, CO 80305
> (303) 497-5418
> _______________________________________________
> ncl-talk mailing list
> ncl-talk at ucar.edu
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>
-- 
------------------------------------------------------------------------------------------
Dr. Guilherme Martins
Instituto Nacional de Pesquisas Espaciais (INPE)
Centro de Previsão de Tempo e Estudos Climáticos (CPTEC)
Grupo de Desenvolvimento em Assimilação de Dados (GDAD)
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E-mail: guilherme.martins at inpe.br || jgmsantos at gmail.com
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