[gradsusr] regriding in grads
Andrew Friedman
andfried at gmail.com
Thu Apr 12 18:10:24 EDT 2018
Hi,
Try the function lterp, which is a built-in function as of GrADS 2.0: http://cola.gmu.edu/grads/gadoc/gradfunclterp.html
-Andrew
> On Apr 12, 2018, at 6:57 PM, Alcides Dominguez Garcia <alcidoga at gmail.com> wrote:
>
> hola,
> Me gustarĂa que me ayuden de como hacer para que me funcione regrid2 ya que por algĂșn motivo me sale error a la hora de ejecutar,
> desde ya agradezco su tiempo.
>
> define newg=regrid2(rainc,0.267,0.267,bl)
> Syntax Error: Invalid Operand
> 'regrid2' not a variable or function name
> Error ocurred at column 1
> DEFINE error: Invalid expression.
>
>
> 2015-08-04 10:37 GMT-04:00 PArI Parimala <pari.rox112 at gmail.com>:
> Thank u got an idea now.. Thank u
>
> On Aug 4, 2015 3:18 PM, "Jayakrishnan P.R" <prjayakrishnan at gmail.com> wrote:
> May be problem with version of grads. I dont know whether it will work in ordinary grads. Regrid function will work in opengrads definitely and I am doing it in opengrads only.
> A working example is given below.
>
> 'reinit'
> 'sdfopen rf_2014-15.nc'
> 'set lat -31 45'
> 'set lon 30 110'
> 'set t 1 last'
> 'define rf9=re(rf,0.5,0.5)'
> 'set sdfwrite rf_reg_new.nc'
> 'sdfwrite rf9'
>
>
> Sincerely
> ***********************************************
> Dr. Jayakrishnan.P.R
> Project Scientist-C
> National Centre for Medium Range Weather Forecasting
> Earth System Science Organisation
> Ministry of Earth Sciences
> A-50, Sector 62, NOIDA -201 309, INDIA
> Mob: 09496026547
> Alternate Email: jkrishna at ncmrwf.gov.in
>
> ***********************************************
>
> On Tue, Aug 4, 2015 at 3:04 PM, PArI Parimala <pari.rox112 at gmail.com> wrote:
> Hi,
>
> Advanced Thank You.
>
> Please Help Me.
> How to do regriding in grads for nc file ?
>
> I have 2 nc files one is from model and one s from ncep.com
> have to regrid the files and find corelation and interpolation.
>
>
>
> What mistake have i done??
>
> 'reinit'
> 'sdfopen air.mon.mean.nc'
>
> 'q file'
> 'set lat -90 90'
> 'set lon 0 360'
> 'set t 1 810'
> 'set z 1'
> 'set gxout shaded'
> 'newgrid = regrid2(sst,2.5)'
> 'd regrid2(sst,2.5,2.5,bs)'
> 'define air1 = regrid(air,2.5)'
> 'd air'
>
>
> 'reinit'
> 'sdfopen sfc_tmp_ensm_fcst.nc'
> 'q file'
> 'set lat -90 90'
> 'set lon 0 360'
> 'set t 1 9'
> 'set gxout shaded'
> 'set z 1'
>
> 'd sfc_tmp'
> *'d scorr(sst.1,sfc_tmp.2,lon=0,lon=360,lat=-90,lat=90)'
>
> ...............................................
> Error
>
>
> No hardcopy metafile open
> All files closed; all defined objects released;
> All GrADS attributes have been reinitialized
> Syntax Error: Invalid Operand
> 'regrid2' not a variable or function name
> Error ocurred at column 1
> DISPLAY error: Invalid expression
> Expression = regrid2(sst,2.5,2.5,bs)
> Syntax Error: Invalid Operand
> 'regrid' not a variable or function name
> Error ocurred at column 1
> DEFINE error: Invalid expression.
> .......................................
>
>
> Thank You ...
> --
> P at r!
>
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