[gradsusr] Dimensions that Grads can operate

Jayakrishnan P.R prjayakrishnan at gmail.com
Wed Apr 22 08:29:12 EDT 2015


Yes...That was the problem. Solved it. Thanks.

Sincerely
***********************************************
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 Wed, Apr 22, 2015 at 5:38 PM, M.Mahakur <mmahakur at tropmet.res.in> wrote:

> Hi,
>
> You have 8 pressure levels, but zero (0) here:
>
> u 0 99 mean Daily qu [kg/s]
>
> Also, please check your undefine value after fwrite. Is it -999 or grads
> default undefine?
>
> Regards,
>
>
> ----- Original Message -----
> From: Jayakrishnan P.R <prjayakrishnan at gmail.com>
> To: GrADS Users Forum <gradsusr at gradsusr.org>
> Sent: Wed, 22 Apr 2015 16:01:27 +0530 (IST)
> Subject: Re: [gradsusr] Dimensions that Grads can operate
>
> Thanks. Eventhough the script after modification is working, the output
> file is having some endian problem or the output figure is erroneous. The
> modified script and ctl file is as follows.
>
> *********************************************************************
>
> 'reinit'
> 'sdfopen G:/Sample_MT/samp/uwnd.2006.nc'
> prompt 'key in filename'
> pull fname
> 'set fwrite 'fname
> yy=1
> while(yy<=73)
> xx=1
> while(xx<=144)
> 'set x 'xx
> 'set y 'yy
> tm=1
> while(tm<=7)
>   'set t 'tm
> prl=1
> while(prl<=8)
> 'set t 'tm
> 'set z 'prl
> 'set gxout fwrite'
> 'd uwnd'
> prl=prl+1
>          endwhile
>        tm=tm+1
>       endwhile
>      xx=xx+1
>    endwhile
>  yy=yy+1
>  endwhile
> 'disable fwrite'
>
>
>
> dset ^U.grd
> undef -999.000000
> xdef 144 linear 0.0 2.5
> ydef 73 linear -90.0 2.5
> zdef  8 levels 1000 925 850 700 600 500 400 300
> tdef 7 linear 00:00Z23jun2006 24hr
> vars 1
> u 0 99 mean Daily qu [kg/s]
> endvars
>
>
>
>
>
> Sincerely
> ***********************************************
> 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, Apr 21, 2015 at 7:49 PM, Madhu Latha <madhulatha11 at gmail.com>
> wrote:
>
> > hi
> > it will work
> > you have to keep x,y also in while loop
> > for example
> >
> > yy=117
> > while(yy<=119)
> > xx=164
> > while(xx<=166)
> > 'set x 'xx
> > 'set y 'yy
> > tm=1
> >
> > while(tm<=76)
> >   'set t 'tm
> > prl=2
> > while(prl<=20)
> > 'set t 'tm
> > 'set z 'prl
> > 'd u'
> > 'save here with file name'
> > prl=prl+1
> >          endwhile
> >        tm=tm+1
> >       endwhile
> >      xx=xx+1
> >    endwhile
> >  yy=yy+1
> >
> > you try this,it may work.
> >
> > On Tue, Apr 21, 2015 at 5:45 PM, Jayakrishnan P.R <
> > prjayakrishnan at gmail.com> wrote:
> >
> >> Hello,
> >>         I am in need of converting NCEP wind data to gridded format
> >> extracted over a latitude longitude domain. I wrote a script for this
> thing
> >> like the following.
> >>
> >> 'reinit'
> >> 'sdfopen G:/Sample_MT/samp/uwnd.2006.nc'
> >> 'set x 1 144'
> >> 'set y 1 73'
> >> prompt 'key in filename'
> >> pull fname
> >> 'set fwrite 'fname
> >> tt=1
> >> while (tt<=365)
> >> 'set t 'tt
> >> zz=1
> >> while (zz<=17)
> >> 'set z 'zz
> >> 'set gxout fwrite'
> >> 'd uwnd'
> >> zz=zz+1
> >> endwhile
> >> tt=tt+1
> >> endwhile
> >>
> >>
> >> But eventhough the script is working, it extracts the data for a single
> >> level only. Do grads operate if we give dimensions greater than 2?. I
> mean,
> >> latitude is varying, longitude is varying, Time is varying, Level is
> >> varying for output..?
> >>
> >>
> >>
> >> Sincerely
> >> ***********************************************
> >> 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
> >>
> >> ***********************************************
> >>
> >> _______________________________________________
> >> gradsusr mailing list
> >> gradsusr at gradsusr.org
> >> http://gradsusr.org/mailman/listinfo/gradsusr
> >>
> >>
> >
> >
> > --
> >
> >
> > *With RegardsMadhulatha Akkisetti*
> >
> > *Project Scientist - C*
> >
> >
> > *National Centre for Medium Range Weather Forecasting (NCMRWF) Ministry
> of
> > Earth Sciences (MoES) *
> >
> > *Noida, UP*
> >
> > _______________________________________________
> > gradsusr mailing list
> > gradsusr at gradsusr.org
> > http://gradsusr.org/mailman/listinfo/gradsusr
> >
> >
>
> --
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