[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 gustaría que me ayuden de como hacer para que me funcione regrid2 ya que por algún 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!
> 
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
> 
> 
> 
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
> 
> 
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
> 
> 
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr




More information about the gradsusr mailing list