[gradsusr] ascii data in netcdf
Jennifer Adams
jma at cola.iges.org
Mon Nov 22 13:14:20 EST 2010
The ncgen utility (which is part of the NetCDF library) is probably
the best the tool to transform ascii data into netcdf. However, GrADS
has no interface for station data in netcdf format, only gridded data.
So if your ultimate objective is to read your station data with GrADS,
then converting it to netcdf will do you no good. You must use a C or
FORTRAN program to create a binary file in a customized format for the
GrADS station data interface. Documentation is at http://iges.org/grads/gadoc/aboutstationdata.html
--Jennifer
On Nov 22, 2010, at 12:54 PM, Ismaila Diallo wrote:
> Dear John,
> I'm trying to write ascii data in netcdf format aor using it after
> in grads. so
> i've 2 grads versions 1.9b4 and 2.07 a.......
> Sincerely
> Cheers!!!!!!!!!!!
>
>
>
> ----- Original Message ----
> From: "gradsusr-request at gradsusr.org" <gradsusr-request at gradsusr.org>
> To: gradsusr at gradsusr.org
> Sent: Mon, November 22, 2010 12:50:07 PM
> Subject: gradsusr Digest, Vol 9, Issue 49
>
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> Today's Topics:
>
> 1. Re: starting grads (Huddleston, John)
> 2. help: lats4d (Marcelino II Villafuerte)
> 3. ascii data in netcdf (Ismaila Diallo)
> 4. Re: ascii data in netcdf (Huddleston, John)
> 5. Re: ascii data in netcdf (fadzil mnor)
> 6. Re: ascii data in netcdf (Huddleston, John)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 20 Nov 2010 11:28:44 -0800
> From: "Huddleston, John" <Huddleston at cira.colostate.edu>
> Subject: Re: [gradsusr] starting grads
> To: GrADS Users Forum <gradsusr at gradsusr.org>
> Message-ID:
>
> <F367071F539DC64FB75E7D7690B8160D010D7A7379A5 at EXVMBX003-2.exch003intermedia.net
> >
>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Sepideh
>
> The control file is fine. It can read the file. It's the data that's
> the issue.
>
> John Huddleston
>
> ________________________________
> From: gradsusr-bounces at gradsusr.org [gradsusr-bounces at gradsusr.org]
> On Behalf Of
> sepide sarachi [sepideh.sarachi at gmail.com]
> Sent: Saturday, November 20, 2010 8:55 AM
> To: GrADS Users Forum
> Subject: Re: [gradsusr] starting grads
>
> Hi
> Thank u so much for your time
> That is the exact problem i am having
> My guess is i need to make a control file myself for every other file
> I am not sure if one can work for all and if this one is just a sample
>
> Sepideh sarachi
>
> On Nov 20, 2010, at 1:50 AM, "Huddleston, John"
> <
> Huddleston at cira.colostate.edu<mailto:Huddleston at cira.colostate.edu>>
> wrote:
>
> Sepideh, it should work for all files as long as they are in the %y4
> directory.
> I put your data file under a 2009 directory and opened it with
> GrADS. The output
> is below. There does seem to be a problem with your data. John
>
> Config: v2.0.a9 little-endian readline printim grib2 netcdf hdf4-sds
> hdf5
> opendap-grids,stn athena geotiff shapefile
> Issue 'q config' command for more detailed configuration information
> GX Package Initialization: Size = 11 8.5
> ga-> open PRCP_CU_GAUGE_V1.0GLB_0.50deg.lnx.RT.ctl
> Scanning description file: PRCP_CU_GAUGE_V1.0GLB_0.50deg.lnx.RT.ctl
> Data file %y4/PRCP_CU_GAUGE_V1.0GLB_0.50deg.lnx.%y4%m2%d2.RT is open
> as file 1
> LON set to 0 360
> LAT set to -89.75 89.75
> LEV set to 1 1
> Time values set: 2007:1:1:0 2007:1:1:0
> E set to 1 1
> ga-> q file
> File 1 : global daily analysis (grid box mean, the grid shown is the
> center of
> the grid box)
> Descriptor: PRCP_CU_GAUGE_V1.0GLB_0.50deg.lnx.RT.ctl
> Binary: %y4/PRCP_CU_GAUGE_V1.0GLB_0.50deg.lnx.%y4%m2%d2.RT
> Type = Gridded
> Xsize = 720 Ysize = 360 Zsize = 1 Tsize = 9999 Esize = 1
> Number of Variables = 2
> rain 1 0 the grid analysis (0.1mm/day)
> gnum 1 0 the number of stn
> ga-> d rain
> Cannot contour grid - all undefined values
> ga-> d gnum
> Cannot contour grid - all undefined values
> ga->
>
> ________________________________
> From: gradsusr-bounces at gradsusr.org<mailto:gradsusr-bounces at gradsusr.org
> >
> [gradsusr-bounces at gradsusr.org<mailto:gradsusr-
> bounces at gradsusr.org>] On Behalf
> Of sepide sarachi [sepideh.sarachi at gmail.com<mailto:sepideh.sarachi at gmail.com
> >]
> Sent: Friday, November 19, 2010 7:01 PM
> To: GrADS Users Forum
> Subject: Re: [gradsusr] starting grads
>
> thanks for the answer
> the version that i am using is 2.0 a8
> my main problem is do i have to make a control file for every one of
> the files
> that i want to read?
> I have a bunch of daily precipitations,that i attach one of them,
> but i just
> have one control file and i have no idea if that is just a sample,
> or it works
> for all of the files.
>
> the first one is the only control file that i have and the second
> one is
> precipitation for 01/04/2009
>
> On Fri, Nov 19, 2010 at 5:41 PM, Huddleston, John
> <<mailto:Huddleston at cira.colostate.edu>Huddleston at cira.colostate.edu<mailto:Huddleston at cira.colostate.edu
> >>
> wrote:
> Hi Sepideh,
>
> You are going to have to give us more information. Try and be more
> focused on
> the GrADS files you are using, show us an example of one of the CTL
> files, give
> us a link to the data files, and tell us what version of GrADS you
> are using
> with the 'q config' command.
>
> John Huddleston, PhD
> Cooperative Institute for Research in the Atmosphere
>
> ________________________________
> From: <mailto:gradsusr-bounces at gradsusr.org>
> gradsusr-bounces at gradsusr.org<mailto:gradsusr-bounces at gradsusr.org>
> [<mailto:gradsusr-bounces at gradsusr.org>gradsusr-bounces at gradsusr.org<mailto:gradsusr-bounces at gradsusr.org
> >]
> On Behalf Of sepide sarachi
> [<mailto:sepideh.sarachi at gmail.com>sepideh.sarachi at gmail.com<mailto:sepideh.sarachi at gmail.com
> >]
>
> Sent: Friday, November 19, 2010 3:25 PM
> To: <mailto:gradsusr at gradsusr.org>
> gradsusr at gradsusr.org<mailto:gradsusr at gradsusr.org>
> Subject: [gradsusr] starting grads
>
> Hi,
> Can anyone help me with this problem:
> I have a set of data with the extension of .lnx, and i have the
> control file for
> them.
> I open the control file, but i don't know how to read the data
> afterward.
>
> thanks
>
> --
> Sepideh Sarachi
> PhD student at
> The Henry Samueli School of Engineering -
> Dep. of Civil & Environmental Engineering -
> University of California, Irvine
>
> _______________________________________________
> gradsusr mailing list
> <mailto:gradsusr at gradsusr.org>gradsusr at gradsusr.org<mailto:gradsusr at gradsusr.org
> >
>
> <http://gradsusr.org/mailman/listinfo/gradsusr>http://gradsusr.org/mailman/listinfo/gradsusr
>
>
>
>
>
> --
> Sepideh Sarachi
> PhD student at
> The Henry Samueli School of Engineering -
> Dep. of Civil & Environmental Engineering -
> University of California, Irvine
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org<mailto:gradsusr at gradsusr.org>
> http://gradsusr.org/mailman/listinfo/gradsusr
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> ------------------------------
>
> Message: 2
> Date: Mon, 22 Nov 2010 14:12:36 +0800
> From: Marcelino II Villafuerte <mqvillafuerte at gmail.com>
> Subject: [gradsusr] help: lats4d
> To: gradsusr at gradsusr.org
> Message-ID:
> <AANLkTikEfmYNnrzM_V-H2YG-6_i0OSPgZ6vYYTeeqRz0 at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi everyone,
>
> I want to compute the bias of my model results thus, I'm trying to
> use the
> lats4d so that they (i.e. Aphrodite & model netcdf files) may have
> equivalent resolution.
> But when I try to use the lats4d command this message is given:
> "Unknown
> command: lats4d".
> I'm using Grid Analysis and Display System (GrADS) Version 2.0.a9.
> It seems
> that the grads version i have in my linux (Fedora13) doesn't support
> LATS?
> Is there something I can do to solve this problem?
>
> Thanks in advance,
> Mar
>
> --
> ---------------------------------------
> Marcelino Q. Villafuerte II
> Weather Specialist I
> IAAS, CAD
> PAGASA-DOST
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> ------------------------------
>
> Message: 3
> Date: Mon, 22 Nov 2010 10:47:41 +0000 (GMT)
> From: Ismaila Diallo <ismailadiallo64 at yahoo.fr>
> Subject: [gradsusr] ascii data in netcdf
> To: gradsusr at gradsusr.org
> Message-ID: <279803.18492.qm at web29604.mail.ird.yahoo.com>
> Content-Type: text/plain; charset=us-ascii
>
> Dear Grads user's
>
> I have some station data in ascii format therefore may i convert
> this data in
> netcdf format with grads. If it possible, so could someone teach me
> how to do
> this script.
> Hope i will get your great help to resolve my problem
> Best Regard.
>
> Ismaila
>
>
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Mon, 22 Nov 2010 06:35:02 -0800
> From: "Huddleston, John" <Huddleston at cira.colostate.edu>
> Subject: Re: [gradsusr] ascii data in netcdf
> To: GrADS Users Forum <gradsusr at gradsusr.org>
> Message-ID:
>
> <F367071F539DC64FB75E7D7690B8160D010D7A7379A8 at EXVMBX003-2.exch003intermedia.net
> >
>
> Content-Type: text/plain; charset="us-ascii"
>
> Ismaila
>
> Are you trying to write ASCII data into netCDF format; or, are you
> needing help
> creating a GrADS control script to read the netCDF file? Depending
> upon which
> way you are going, we need more information.
>
> John Huddleston
>
> ________________________________________
> From: gradsusr-bounces at gradsusr.org [gradsusr-bounces at gradsusr.org]
> On Behalf Of
> Ismaila Diallo [ismailadiallo64 at yahoo.fr]
> Sent: Monday, November 22, 2010 3:47 AM
> To: gradsusr at gradsusr.org
> Subject: [gradsusr] ascii data in netcdf
>
> Dear Grads user's
>
> I have some station data in ascii format therefore may i convert
> this data in
> netcdf format with grads. If it possible, so could someone teach me
> how to do
> this script.
> Hope i will get your great help to resolve my problem
> Best Regard.
>
> Ismaila
>
>
>
>
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>
>
> ------------------------------
>
> Message: 5
> Date: Tue, 23 Nov 2010 00:40:18 +0800
> From: fadzil mnor <fadzilmnor84 at gmail.com>
> Subject: Re: [gradsusr] ascii data in netcdf
> To: GrADS Users Forum <gradsusr at gradsusr.org>
> Message-ID:
> <AANLkTikYP7y0H7LvT-ytKrj9vasjpDjUMYf8kYT0aeO9 at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> hi,
> if he wants to convert those *.ascii file to *.nc file, how can we
> do it?
> is it possible just convert it in linux command or need to do
> something else.
>
> On 11/22/10, Huddleston, John <Huddleston at cira.colostate.edu> wrote:
>> Ismaila
>>
>> Are you trying to write ASCII data into netCDF format; or, are you
>> needing
>> help creating a GrADS control script to read the netCDF file?
>> Depending upon
>> which way you are going, we need more information.
>>
>> John Huddleston
>>
>> ________________________________________
>> From: gradsusr-bounces at gradsusr.org [gradsusr-bounces at gradsusr.org]
>> On
>> Behalf Of Ismaila Diallo [ismailadiallo64 at yahoo.fr]
>> Sent: Monday, November 22, 2010 3:47 AM
>> To: gradsusr at gradsusr.org
>> Subject: [gradsusr] ascii data in netcdf
>>
>> Dear Grads user's
>>
>> I have some station data in ascii format therefore may i convert
>> this data
>> in
>> netcdf format with grads. If it possible, so could someone teach me
>> how to
>> do
>> this script.
>> Hope i will get your great help to resolve my problem
>> Best Regard.
>>
>> Ismaila
>>
>>
>>
>>
>> _______________________________________________
>> 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
>>
>
>
> ------------------------------
>
> Message: 6
> Date: Mon, 22 Nov 2010 08:53:55 -0800
> From: "Huddleston, John" <Huddleston at cira.colostate.edu>
> Subject: Re: [gradsusr] ascii data in netcdf
> To: GrADS Users Forum <gradsusr at gradsusr.org>
> Message-ID:
>
> <F367071F539DC64FB75E7D7690B8160D010D7A7379A9 at EXVMBX003-2.exch003intermedia.net
> >
>
> Content-Type: text/plain; charset="us-ascii"
>
> Fadzil
>
> While there are many folks on this list who could convert ASCII to
> netCDF, that
> help can best come from the
> http://www.unidata.ucar.edu/support/mailinglist/mailing-list-
> form.html email
> list.
>
> This list is for GrADS software.
>
> John Huddleston
>
> ________________________________________
> From: gradsusr-bounces at gradsusr.org [gradsusr-bounces at gradsusr.org]
> On Behalf Of
> fadzil mnor [fadzilmnor84 at gmail.com]
> Sent: Monday, November 22, 2010 9:40 AM
> To: GrADS Users Forum
> Subject: Re: [gradsusr] ascii data in netcdf
>
> hi,
> if he wants to convert those *.ascii file to *.nc file, how can we
> do it?
> is it possible just convert it in linux command or need to do
> something else.
>
> On 11/22/10, Huddleston, John <Huddleston at cira.colostate.edu> wrote:
>> Ismaila
>>
>> Are you trying to write ASCII data into netCDF format; or, are you
>> needing
>> help creating a GrADS control script to read the netCDF file?
>> Depending upon
>> which way you are going, we need more information.
>>
>> John Huddleston
>>
>> ________________________________________
>> From: gradsusr-bounces at gradsusr.org [gradsusr-bounces at gradsusr.org]
>> On
>> Behalf Of Ismaila Diallo [ismailadiallo64 at yahoo.fr]
>> Sent: Monday, November 22, 2010 3:47 AM
>> To: gradsusr at gradsusr.org
>> Subject: [gradsusr] ascii data in netcdf
>>
>> Dear Grads user's
>>
>> I have some station data in ascii format therefore may i convert
>> this data
>> in
>> netcdf format with grads. If it possible, so could someone teach me
>> how to
>> do
>> this script.
>> Hope i will get your great help to resolve my problem
>> Best Regard.
>>
>> Ismaila
>>
>>
>>
>>
>> _______________________________________________
>> 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
>>
> _______________________________________________
> 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
>
>
> End of gradsusr Digest, Vol 9, Issue 49
> ***************************************
>
>
>
>
> _______________________________________________
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> http://gradsusr.org/mailman/listinfo/gradsusr
--
Jennifer M. Adams
IGES/COLA
4041 Powder Mill Road, Suite 302
Calverton, MD 20705
jma at cola.iges.org
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