[gradsusr] regrid data

[Jackie Yip]

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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