[gradsusr] regrid data

Wed Apr 13 21:10:10 EDT 2011

On Wed, Apr 13, 2011 at 10:26 AM, Subash Yeggina
<subash.yeggina at gmail.com>wrote:

> Hi! Arlindo,
>
> I am using GrADS on Windows XP. The version of GrDAS is *2.0.a9.oga.1*
>
> The output of the q udx is attached..
>
>
What exactly is your problem? Is re() not being found? Click on the
opengrads icon on your desktop and try this:

ga-> open model
ga-> d re(ps,10)

   Arlindo

>
> Regards,
> Subash
>
>
> On Wed, Apr 13, 2011 at 7:23 PM, Jackie Yip <zheng.yip at mcgill.ca> wrote:
>
>> Hi Arlindo,
>>
>> I'm running GrADs on Mac OS X. As I wasn't the person who installed this
>> version of GrADs, I'm not sure which method of installation was used. But I
>> hope the following info helps...
>>
>> My q config output:
>>
>> Config: v2.0.a9.oga.1 little-endian readline printim netcdf hdf4-sds hdf5
>> opendap-grids,stn geotiff shapefile
>> Grid Analysis and Display System (GrADS) Version 2.0.a9.oga.1
>> Copyright (c) 1988-2010 by Brian Doty and the
>> Institute for Global Environment and Society (IGES)
>> This program is distributed WITHOUT ANY WARRANTY
>> See file COPYRIGHT for more information.
>>
>> Built Fri Apr  1 11:31:19 EDT 2011 for i386-apple-darwin10.5.0
>>
>> This version of GrADS has been configured with the following options:
>>   o Built on a LITTLE ENDIAN machine
>>   o Athena Widget GUI DISABLED
>>   o Command line editing ENABLED
>>       http://tiswww.case.edu/php/chet/readline/rltop.html
>>    o printim command for image output ENABLED
>>       http://www.zlib.net
>>       http://www.libpng.org/pub/png/libpng.html
>>       http://www.libgd.org/Main_Page
>>   o GRIB2 interface DISABLED
>>   o NetCDF interface ENABLED
>>       http://www.unidata.ucar.edu/software/netcdf
>>       netcdf 4.1.1 of Apr  1 2011 11:38:40 $
>>   o OPeNDAP gridded data interface ENABLED
>>   o OPeNDAP station data interface ENABLED
>>       http://iges.org/grads/gadoc/supplibs.html
>>       libgadap 2.0
>>   o HDF4 and HDF5 interfaces ENABLED
>>       http://hdfgroup.org
>>       HDF 4.2r5
>>       HDF5 1.8.6
>>   o GeoTIFF and KML/TIFF output ENABLED
>>       http://www.libtiff.org
>>       http://geotiff.osgeo.org
>>   o KML contour output ENABLED
>>   o Shapefile interface ENABLED
>>       http://shapelib.maptools.org
>>
>> q udx or udxt was not recognized as a valid query.
>>
>> Many thanks
>>
>> Zheng
>>
>>
>>
>> On 12 April 2011 19:54, Arlindo da Silva <dasilva at alum.mit.edu> wrote:
>>
>>> On Tue, Apr 12, 2011 at 3:22 PM, Jackie Yip <zheng.yip at mcgill.ca> wrote:
>>>
>>>> Hi Subash,
>>>>
>>>> I also got the error
>>>> "Syntax Error:  Invalid Operand 're' not a variable or function name"
>>>>  even though I used GrADs 2.0.a9.oga.1.
>>>>
>>>> Is the re function an extra thing one must install like a user define
>>>> extension? Or is the re function built-in for GrADs 2.0.a9.oga.1.?
>>>>
>>>>
>>> The extension re() is supposed to be include in all opengrads builds.
>>> Which operating system are you using? Please send output of
>>>
>>> ga-> q config
>>> ga-> q udx
>>>
>>>  Did you do the regular opengrads bundle installation ("untar and go") or
>>> did you perform the "classic installation"?
>>>
>>>    A
>>>
>>>
>>>
>>>>  Thanks
>>>>
>>>> Zheng
>>>>
>>>> On 12 April 2011 14:32, Subash Yeggina <subash.yeggina at gmail.com>wrote:
>>>>
>>>>> Hi! Ismaila,
>>>>>
>>>>> You are correct... The regridding seems to be working if it is done
>>>>> just after the openning of the file.
>>>>>
>>>>> I tried doing the regridding after a few operations, and it failed. Not
>>>>> sure of the logic behind it..
>>>>>
>>>>> have you been able to resolve this issue at ur end.
>>>>>
>>>>> My version of GrADS is *2.0.a9.oga.1.*
>>>>>
>>>>>
>>>>> Thanks,
>>>>> Subash
>>>>>
>>>>>
>>>>> 'open rfpt5.ctl'
>>>>> 'define newgrid = re(pr,0.25)
>>>>>
>>>>> On Fri, Apr 8, 2011 at 12:23 AM, Ismaila Diallo <
>>>>> ismailadiallo64 at yahoo.fr> wrote:
>>>>>
>>>>>> Hi subash,
>>>>>> i've used the re commend and i get this error :
>>>>>>
>>>>>> d re(pr,0.5)
>>>>>> Syntax Error:  Invalid Operand
>>>>>>   're' not a variable or function name
>>>>>>   Error ocurred at column 1
>>>>>> DISPLAY error:  Invalid expression
>>>>>>   Expression = re(pr,0.5)
>>>>>>
>>>>>> I am using grads1.9
>>>>>> Thank in advance
>>>>>> ------------------------------
>>>>>> *From:* Subash Yeggina <subash.yeggina at gmail.com>
>>>>>> *To:* Ismaila Diallo <ismailadiallo64 at yahoo.fr>; GrADS Users Forum <
>>>>>> gradsusr at gradsusr.org>
>>>>>> *Sent:* Thursday, April 7, 2011 8:10 PM
>>>>>> *Subject:* Re: [gradsusr] regrid data
>>>>>>
>>>>>> Dear Ismaila,
>>>>>>
>>>>>>
>>>>>> I think you can do it by using the *re *command.
>>>>>>
>>>>>> Ex:
>>>>>>
>>>>>> define newg=re(<variable>,<resolution>).
>>>>>>
>>>>>> For more details you can check
>>>>>> http://opengrads.org/doc/udxt/re/re.html#required_parameters
>>>>>>
>>>>>> <http://opengrads.org/doc/udxt/re/re.html#required_parameters>Subash
>>>>>>
>>>>>> On Thu, Apr 7, 2011 at 10:57 PM, Ismaila Diallo <
>>>>>> ismailadiallo64 at yahoo.fr> wrote:
>>>>>>
>>>>>> dear grads User,
>>>>>> i've to netcdf files with different resolution. I use grads1.9 and i
>>>>>> went to regrids these data at a same resolution with my grads thus how
>>>>>> should i do??
>>>>>>
>>>>>> Sincerely
>>>>>> ismaila
>>>>>>
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>>>>>> gradsusr at gradsusr.org
>>>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>> _______________________________________________
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>>>>>
>>>>>
>>>>
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>>>>
>>>
>>>
>>> --
>>> Arlindo da Silva
>>> dasilva at alum.mit.edu
>>>
>>
>>
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>>
>
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-- 
Arlindo da Silva
dasilva at alum.mit.edu
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