[gradsusr] opening CAM netcdf files with grads
Cara-Lyn Lappen
lappen7 at gmail.com
Tue Nov 6 11:32:44 EST 2012
yes, I used xdfopen.. Here is the information you requested: Any advice would be much appreciated,
Here is the complete grads session that occurred:
-> grads
Grid Analysis and Display System (GrADS) Version 2.0.a9
Copyright (c) 1988-2010 by Brian Doty and the
Institute for Global Environment and Society (IGES)
GrADS comes with ABSOLUTELY NO WARRANTY
See file COPYRIGHT for more information
Config: v2.0.a9 little-endian readline printim grib2 netcdf hdf4-sds hdf5 opendap-grids geotiff shapefile
Issue 'q config' command for more detailed configuration information
Landscape mode? ('n' for portrait):
GX Package Initialization: Size = 11 8.5
ga-> xdfopen test.ctl
Scanning Descriptor File: test.ctl
gadxdf error: Missing or invalid dimension size.
--> The invalid description file record is:
--> xdef lon 144 linear 0.0 2.5
The data file was not opened.
Here is my test.ctl file:
DSET ^tiltedheat_daily_1980_1997_FLNT_anom.nc
TITLE This is only a test
options template 365_day_calendar
UNDEF -999
XDEF lon 144 LINEAR 0.0 2.5
YDEF lat 96 LINEAR -90. 1.9
TDEF 6206 LINEAR 00Z1jan1980 1dy
VARS 1
OLR=>FLNT_anom 0 x,y OLR
ENDVARS
On Nov 2, 2012, at 4:42 AM, Jennifer Adams <jma at cola.iges.org> wrote:
> Did you use xdfopen? Please send the complete text of your GrADS session, including the version number. You will need the 'options 365_day_calendar' entry to your descriptor. --Jennifer
>
>
> On Nov 1, 2012, at 9:34 PM, Cara-Lyn Lappen wrote:
>
>> Removing lon and lat did not work
>>
>> I get the same error message.
>>
>> The other suggestion to add the line : "options template 365_day_calendar" also did not work.
>>
>> any other ideas? Im open…
>>
>> Cara-Lyn
>>
>>
>>
>> On Nov 1, 2012, at 7:25 PM, Rupak Rajbhandari <rupak.rajbhandari at gmail.com> wrote:
>>
>>> remove 'lon' & 'lat' from xdef and ydef line in a descriptor file.
>>>
>>> -rupak
>>>
>>>
>>> On Fri, Nov 2, 2012 at 2:24 AM, Sagar Parajuli <psagar at utexas.edu> wrote:
>>> Hi Cara-lyn
>>> In your script please include the following and use xdfopen to open the
>>> file, it should work:
>>> options template 365_day_calendar
>>>
>>>
>>>
>>> ,
>>>
>>> Sagar Prasad Parajuli
>>> Graduate Student/Research Assistant
>>> University of Texas at Austin
>>> Jackson School of Geosciences
>>> 1 University Station C1100, JGB 5.322
>>> Austin, TX 78712
>>> Contact: psagar at utexas.edu
>>> Cell: 512 965 4093
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: gradsusr-bounces at gradsusr.org [mailto:gradsusr-bounces at gradsusr.org]
>>> On Behalf Of Cara-Lyn Lappen
>>> Sent: Thursday, November 01, 2012 3:10 PM
>>> To: gradsusr at gradsusr.org
>>> Subject: [gradsusr] opening CAM netcdf files with grads
>>>
>>> hi all,
>>>
>>> I am fairly new to GraDs. I am trying to use GraDs to open a netcdf file
>>> created by the NCAR CAM model. I have tried everything and I can't get it to
>>> work.
>>> sdfopen doesn't work because it has a 365 day calendar. So, I tried xdfopen
>>> with a model descriptor file that looks like this (test.ctl)
>>>
>>> DSET ^tiltedheat_daily_1980_1997_FLNT_anom.nc
>>> TITLE This is only a test
>>> UNDEF -999
>>> XDEF lon 144 LINEAR 0.0 2.5
>>> YDEF lat 96 LINEAR -90. 1.9
>>> TDEF 6206 LINEAR 00Z1jan1980 1dy
>>> VARS 1
>>> OLR=>FLNT_anom 0 x,y OLR
>>> ENDVARS
>>>
>>> -----------------------------------------------------------
>>>
>>> The ncdump -h output for this file looks like this:
>>>
>>> netcdf tiltedheat_daily_1980_1997_FLNT_anom {
>>> dimensions:
>>> time = UNLIMITED ; // (6206 currently)
>>> lat = 38 ;
>>> lon = 144 ;
>>> variables:
>>> double time(time) ;
>>> time:long_name = "time" ;
>>> time:units = "days since 1980-01-01 00:00:00" ;
>>> time:calendar = "noleap" ;
>>> time:bounds = "time_bnds" ;
>>> double lat(lat) ;
>>> lat:long_name = "latitude" ;
>>> lat:units = "degrees_north" ;
>>> double lon(lon) ;
>>> lon:long_name = "longitude" ;
>>> lon:units = "degrees_east" ;
>>> float FLNT_anom(time, lat, lon) ;
>>> FLNT_anom:_FillValue = -999.f ;
>>> FLNT_anom:long_name = "OLR Anomalies from Raw Daily
>>> Climatology" ;
>>> FLNT_anom:units = "W/m2" ;
>>> float FLNT_anom_sm(time, lat, lon) ;
>>> FLNT_anom_sm:_FillValue = -999.f ;
>>> FLNT_anom_sm:long_name = "FLNT Anomalies from Smooth Daily
>>> Climatology" ;
>>> FLNT_anom_sm:units = "W/m2" ;
>>>
>>> // global attributes:
>>> :creation_date = "Wed Sep 5 13:44:55 CDT 2012" ;
>>> :title = "FLNT: Daily Anomalies: 1980-1997" ; }
>>>
>>> ----------------------------------------------------
>>>
>>> The error I keep getting when I type "open test.ctl" is:
>>>
>>> Scanning description file: test.ctl
>>> Open Error: Missing or invalid dimension size.
>>> --> The invalid description file record is:
>>> --> XDEF lon 144 LINEAR 0.0 2.5
>>> The data file was not opened.
>>>
>>>
>>> What is wrong with the xdef line? it seems so basic to implement, but it
>>> won't work.
>>>
>>> any help that anyone has would be much appreciated,
>>>
>>> thanks,
>>>
>>> Cara-Lyn
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> Cara-Lyn
>>>
>>>
>>> ***************************************************
>>> Dr. Cara-Lyn Lappen
>>> Dept. of Atmos. Sciences ,__o
>>> Texas A&M University _ -\ _<;
>>> Phone: (970) 382-2290 (*) /' (*)
>>> Cell Phone: (970) 946-6134
>>> Email: lappen7 at gmail.com
>>> ***************************************************
>>>
>>>
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>>
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>
> --
> Jennifer M. Adams
> IGES/COLA
> 4041 Powder Mill Road, Suite 302
> Calverton, MD 20705
> jma at cola.iges.org
>
>
>
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