[gradsusr] netcdf files with different order of variables

[Jeff Duda]

So are you having any issues or errors when trying to plot the data over
various time slices?

Jeff

On Tue, Feb 6, 2018 at 10:44 AM, Semyon Grodsky <senya at umd.edu> wrote:

> Jeff,
>
> I am using CTL that templates all daily files. To open data
>
> open CTL
>
> --Senya
>
> On 2/6/2018 12:30 PM, Jeff Duda wrote:
>
> Just curious how this goes. Are you using sdfopen to query the file? In my
> experience viewing netCDF data in Grads, you can write a control file to
> only view the specific arrays you want to display and omit the rest from
> the VARS section. I've done exactly this with WRF output for years. Have
> you tried this?
>
> Jeff Duda
>
> On Tue, Feb 6, 2018 at 7:21 AM, Jennifer M Adams <jadams21 at gmu.edu> wrote:
>
>> Yes, it most definitely DOES matter!
>>
>> Grads requires that the netcdf varids be consistent for each variable in
>> a templated set of data files. If the variables are written out in
>> different order in some of the data files, the varids won’t be the same,
>> and GrADS will get upset. I think using NCO to rearrange the variables is
>> your best option, but be careful if the data are compressed/chunked — NCO
>> will not retain existing chunking parameters in the output file, and the
>> defaults are not GrADS-friendly. Use the —cnk_dmn option to specify which
>> dimensions should be chunked and what the chunk size should be.
>> —Jennifer
>>
>>
>>
>> > On Feb 6, 2018, at 3:33 AM, M.Mahakur <mmahakur at TROPMET.RES.IN> wrote:
>> >
>> > It doesn't matter.
>> >
>> >
>> >
>> > ----- Original Message -----
>> > From: Semyon Grodsky <senya at umd.edu>
>> > To: GrADS Users Forum <gradsusr at gradsusr.org>
>> > Sent: Tue, 06 Feb 2018 09:43:43 +0530 (IST)
>> > Subject: [gradsusr] netcdf files with different order of variables
>> >
>> > Dear GRADS community,
>> >
>> > I face a bit unusual problem. I have data in netcdf fromat, but a
>> > portion of files has different order of variables. For an example, some
>> > files has the following order of variables u,v,T.S while other files -
>> > T,S, u,v.
>> >
>> > Is there a way to use all these data in GRADS?
>> >
>> > Alternatively, could smb suggest a simple (utility based) way to unify
>> > the order of variables (say change T,S, u,v => u,v,T.S)?
>> >
>> > Thanks,
>> >
>> > --Senya
>> >
>> > --
>> > -----------------------------------------------
>> > Semyon Grodsky
>> > University of Maryland
>> > Department of Atmospheric and Oceanic Science
>> > Room 2409, Atlantic Building (224)
>> > 4254 Stadium Dr.
>> > College Park, MD 20742
>> >
>> > Phone:  301-405-5330
>> > Fax:    301-314-9482
>> > E-mail: senya at atmos.umd.edu
>> >
>> > _______________________________________________
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>>
>> --
>> Jennifer Miletta Adams
>> Center for Ocean-Land-Atmosphere Studies (COLA)
>> George Mason University
>>
>>
>>
>>
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>
>
>
> --
> Jeff Duda, Research Scientist
>
> University of Colorado Boulder
>
> Cooperative Institute for Research in Environmental Sciences
>
> NOAA/OAR/ESRL/Global Systems Division
> Boulder, CO
>
>
> _______________________________________________
> gradsusr mailing listgradsusr at gradsusr.orghttp://gradsusr.org/mailman/listinfo/gradsusr
>
>
> --
> -----------------------------------------------
> Semyon Grodsky
> University of Maryland
> Department of Atmospheric and Oceanic Science
> Room 2409, Atlantic Building (224)
> 4254 Stadium Dr.
> College Park, MD 20742
>
> Phone:  301-405-5330
> Fax:    301-314-9482
> E-mail: senya at atmos.umd.edu
>
>
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>
>


-- 
Jeff Duda, Research Scientist

University of Colorado Boulder

Cooperative Institute for Research in Environmental Sciences

NOAA/OAR/ESRL/Global Systems Division
Boulder, CO
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