[gradsusr] How can we write XDEF to open *.nc files?

T. haghroosta haghroosta at hotmail.com
Mon Jan 20 22:37:53 EST 2014 

Hi Charles Vanya,
 
Did you tried this?
 
sdfopen  E:\..........  (the path of your folder)\cape.2013.nc
 
regards.
 
T. Haghroosta
 
> From: gradsusr-request at gradsusr.org
> Subject: gradsusr Digest, Vol 47, Issue 46
> To: gradsusr at gradsusr.org
> Date: Mon, 20 Jan 2014 22:23:13 -0500
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> Today's Topics:
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>    1. Re: How can we write XDEF to open *.nc files? (Charles Vanya)
>    2. Re: How can we write XDEF to open *.nc files? (Charles Vanya)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Mon, 20 Jan 2014 18:59:31 -0800 (PST)
> From: Charles Vanya <charles.vanya at yahoo.com>
> Subject: Re: [gradsusr] How can we write XDEF to open *.nc files?
> To: GrADS Users Forum <gradsusr at gradsusr.org>
> Message-ID:
> 	<1390273171.8538.YahooMailNeo at web162203.mail.bf1.yahoo.com>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> Thanks to Jennifer and Hoop for providing such kind of assistance.
> ?I have downloaded? the data file and I am using Grads on windows,now my next question is "How can I run this script when I am unable to open the file in Grads?". 
> 
> I know? how to run some *.gs scripts where the scripts bears the path to the file you want to run. In this case I have several files in the smae folder but I just want one file called cape.2013.nc. 
> 
> Should I? to put the script in the same folder as data?
> I want some direction on what do I need to do say."How do I link this file and the script?"
> 
> Thanks all
> 
> ?
> Charles Langton Vanya
> (Principal Meteorologist)
> ---------------------------------------------------------------------------------
> 
> Department of Climate Change and Meteorological Services,
> Regional Government Offices-(Next to Immigration Office),
> Box 1808
> Blantyre,Malawi
> ---------------------------------------------------------------------------------
> Tel:?? ??? (+ 265) 1 822 014
> Cell: ??? (+265) 888 980 545 / 999 380 545
> 
> Fax:???? (+265) 1 822 215
> ----------------------------------------------------------------------------------
> 
> "Tell me and I'll forget, show me and I may remember; involve me and I will understand"
> 
> 
> 
> 
> On Monday, January 20, 2014 8:35 PM, Jennifer Adams <jma at cola.iges.org> wrote:
>  
> This file needs a PDEF entry, and narropen.gs will do all the work to create a working descriptor file for you. The only thing I would suggest is that you download the file and read it from your local disk instead of using a URL in your DSET entry and doing the I/O via opendap. The I/O for a pdef'd file via opendap is prohibitively slow. It is on my list of things to fix.?
> --Jennifer
> 
> 
> 
> 
> On Jan 20, 2014, at 1:02 PM, Hoop wrote:
> 
> Charles Vanya,
> >
> >The NARR data are on a Lambert Conformal Conic grid, not a regular
> >lat-lon grid. ?The good news is, there's a standard script for
> >opening them. ?It takes the arguments you give it, writes a
> >Data Descriptor File (DDF) for the NARR data file, and then opens
> >it with the "open" command. ?The name of the script is "narropen",
> >and, as I said, it's part of the standard suite of scripts. ?It may
> >be found at:
> >
> >ftp://cola.gmu.edu/grads/scripts/narropen.gs
> >
> >You can learn how to call it by running it without arguments.
> >
> >-Hoop
> >
> >
> >Date: Mon, 20 Jan 2014 03:07:34 -0800 (PST)
> >>
> >From: Charles Vanya <charles.vanya at yahoo.com>
> >>
> >Subject: [gradsusr] How can we write XDEF to open *.nc files?
> >>
> >To: "gradsusr at gradsusr.org" <gradsusr at gradsusr.org>
> >>
> >
> >>
> >Dear All,
> >>
> >?I am novel with GrADS and recently was doing a case study of a lightning
> >>
> >that killed 8 people at once and same place. As I was trying to load
> >>
> >cape.2013.nc and cin.2013.nc I encountered an error that I am failing to
> >>
> >resolve up to now. The error is shwon below:
> >>
> >=====================================================
> >>
> >
> >>
> >ga-> sdfopen c:/Users/CHARLES/Downloads/cape.2013.nc
> >>
> >Scanning self-describing file:? c:/Users/CHARLES/Downloads/cape.2013.nc
> >>
> >gadsdf: SDF file has no discernable X coordinate.
> >>
> >? To open this file with GrADS, use a descriptor file with an XDEF entry.
> >>
> >? Documentation is at http://iges.org/grads/gadoc/SDFdescriptorfile.html
> >>
> >ga->?======================================
> >>
> >Now the question is how can I open such kind of data in Grads. I read
> >>
> >through the mentioned document but it is not helpful to me. Can any one
> >>
> >help me with guidance and set of commands to open and read this data?
> >>
> >the data is accessible from
> >>
> >http://www.esrl.noaa.gov/psd/thredds/fileServer/Datasets/NARR/monolevel/cin.2013.nc?
> >>
> >Thanks in advance
> >>
> >?
> >>
> >Charles Langton Vanya
> >>
> >(Principal Meteorologist)
> >>
> >---------------------------------------------------------------------------------
> >>
> >
> >>
> >Department of Climate Change and Meteorological Services,
> >>
> >Regional Government Offices-(Next to Immigration Office),
> >>
> >Box 1808
> >>
> >Blantyre,Malawi
> >>
> >---------------------------------------------------------------------------------
> >>
> >Tel:?? ??? (+ 265) 1 822 014
> >>
> >Cell: ??? (+265) 888 980 545 / 999 380 545
> >>
> >
> >>
> >Fax:???? (+265) 1 822 215
> >>
> >----------------------------------------------------------------------------------
> >>
> >
> >>
> >"Tell me and I'll forget, show me and I may remember; involve me and I will understand"
> >>_______________________________________________
> >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?
> 
> 
> 
> 
> 
> 
> 
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> gradsusr at gradsusr.org
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> ------------------------------
> 
> Message: 2
> Date: Mon, 20 Jan 2014 19:23:16 -0800 (PST)
> From: Charles Vanya <charles.vanya at yahoo.com>
> Subject: Re: [gradsusr] How can we write XDEF to open *.nc files?
> To: Charles Vanya <charles.vanya at yahoo.com>,	GrADS Users Forum
> 	<gradsusr at gradsusr.org>
> Message-ID:
> 	<1390274596.47728.YahooMailNeo at web162205.mail.bf1.yahoo.com>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> Sorry for asking my question in a very poor way. But this is what I dd and I got this error?
> ------------------------------------
> ga-> run c:/Users/CHARLES/Desktop/Grads/narropen.gs
> must include following args:
> narropen netCDFfile VarName NumTimes StartTime DeltaT [out.ddf] [VerticalCoord]
> [HorizRes]
> Where:
> netCDFfile is full path to netcdf file
> VarName is the variable name in netcdf file
> NumTimes is the number of timesteps in the netCDF file
> StartTime is the first time in the file (e.g. 00z01jan1979)
> DeltaT is the time increment between timesteps (e.g. 3hr, 1dy, 1mo, or 1yr)
> out.ddf is the optional full path to the generated ddf file ./.ddf is the default
> VerticalCoord is one of following: sfc or press or subsfc (sfc default)
> HorizRes is the resolution to regrid to: 0.33 or 1.0 (0.33 default)
> ga->
> 
> 
> Now the question is how can I use the script since it has no instruction on how to use it?
> 
> ?
> Charles Langton Vanya
> (Principal Meteorologist)
> ---------------------------------------------------------------------------------
> 
> Department of Climate Change and Meteorological Services,
> Regional Government Offices-(Next to Immigration Office),
> Box 1808
> Blantyre,Malawi
> ---------------------------------------------------------------------------------
> Tel:?? ??? (+ 265) 1 822 014
> Cell: ??? (+265) 888 980 545 / 999 380 545
> 
> Fax:???? (+265) 1 822 215
> ----------------------------------------------------------------------------------
> 
> "Tell me and I'll forget, show me and I may remember; involve me and I will understand"
> 
> 
> 
> 
> On Tuesday, January 21, 2014 5:08 AM, Charles Vanya <charles.vanya at yahoo.com> wrote:
>  
> Thanks to Jennifer and Hoop for providing such kind of assistance.
> ?I have downloaded? the data file and I am using Grads on windows,now my next question is "How can I run this script when I am unable to open the file in Grads?". 
> 
> I know? how to run some *.gs scripts where the scripts bears the path to the file you want to run. In this case I have several files in the smae folder but I just want one file called cape.2013.nc. 
> 
> Should I? to put the script in the same folder as data?
> I want some direction on what do I need to do say."How do I link this file and the script?"
> 
> Thanks all
> 
> ?
> Charles Langton Vanya
> (Principal Meteorologist)
> ---------------------------------------------------------------------------------
> 
> Department of Climate Change and Meteorological Services,
> Regional Government Offices-(Next to Immigration Office),
> Box 1808
> Blantyre,Malawi
> ---------------------------------------------------------------------------------
> Tel:?? ??? (+ 265) 1 822 014
> Cell: ??? (+265) 888 980 545 / 999 380 545
> 
> Fax:???? (+265) 1 822 215
> ----------------------------------------------------------------------------------
> 
> "Tell me and I'll forget, show me and I may remember; involve me and I will understand"
> 
> 
> 
> 
> On Monday, January 20, 2014 8:35 PM, Jennifer Adams <jma at cola.iges.org> wrote:
>  
> This file needs a PDEF entry, and narropen.gs will do all the work to create a working descriptor file for you. The only thing I would suggest is that you download the file and read it from your local disk instead of using a URL in your DSET entry and doing the I/O via opendap. The I/O for a pdef'd file via opendap is prohibitively slow. It is on my list of things to fix.?
> --Jennifer
> 
> 
> 
> 
> On Jan 20, 2014, at 1:02 PM, Hoop wrote:
> 
> Charles Vanya,
> >
> >The NARR data are on a Lambert Conformal Conic grid, not a regular
> >lat-lon grid. ?The good news is, there's a standard script for
> >opening them. ?It takes the arguments you give it, writes a
> >Data Descriptor File (DDF) for the NARR data file, and then opens
> >it with the "open" command. ?The name of the script is "narropen",
> >and, as I said, it's part of the standard suite of scripts. ?It may
> >be found at:
> >
> >ftp://cola.gmu.edu/grads/scripts/narropen.gs
> >
> >You can learn how to call it by running it without arguments.
> >
> >-Hoop
> >
> >
> >Date: Mon, 20 Jan 2014 03:07:34 -0800 (PST)
> >>
> >From: Charles Vanya <charles.vanya at yahoo.com>
> >>
> >Subject: [gradsusr] How can we write XDEF to open *.nc files?
> >>
> >To: "gradsusr at gradsusr.org" <gradsusr at gradsusr.org>
> >>
> >
> >>
> >Dear All,
> >>
> >?I am novel with GrADS and recently was doing a case study of a lightning
> >>
> >that killed 8 people at once and same place. As I was trying to load
> >>
> >cape.2013.nc and cin.2013.nc I encountered an error that I am failing to
> >>
> >resolve up to now. The error is shwon below:
> >>
> >=====================================================
> >>
> >
> >>
> >ga-> sdfopen c:/Users/CHARLES/Downloads/cape.2013.nc
> >>
> >Scanning self-describing file:? c:/Users/CHARLES/Downloads/cape.2013.nc
> >>
> >gadsdf: SDF file has no discernable X coordinate.
> >>
> >? To open this file with GrADS, use a descriptor file with an XDEF entry.
> >>
> >? Documentation is at http://iges.org/grads/gadoc/SDFdescriptorfile.html
> >>
> >ga->?======================================
> >>
> >Now the question is how can I open such kind of data in Grads. I read
> >>
> >through the mentioned document but it is not helpful to me. Can any one
> >>
> >help me with guidance and set of commands to open and read this data?
> >>
> >the data is accessible from
> >>
> >http://www.esrl.noaa.gov/psd/thredds/fileServer/Datasets/NARR/monolevel/cin.2013.nc?
> >>
> >Thanks in advance
> >>
> >?
> >>
> >Charles Langton Vanya
> >>
> >(Principal Meteorologist)
> >>
> >---------------------------------------------------------------------------------
> >>
> >
> >>
> >Department of Climate Change and Meteorological Services,
> >>
> >Regional Government Offices-(Next to Immigration Office),
> >>
> >Box 1808
> >>
> >Blantyre,Malawi
> >>
> >---------------------------------------------------------------------------------
> >>
> >Tel:?? ??? (+ 265) 1 822 014
> >>
> >Cell: ??? (+265) 888 980 545 / 999 380 545
> >>
> >
> >>
> >Fax:???? (+265) 1 822 215
> >>
> >----------------------------------------------------------------------------------
> >>
> >
> >>
> >"Tell me and I'll forget, show me and I may remember; involve me and I will understand"
> >>_______________________________________________
> >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?
> 
> 
> 
> 
> 
> 
> 
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
> 
> 
> 
> 
> _______________________________________________
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> http://gradsusr.org/mailman/listinfo/gradsusr
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