[gradsusr] convertion of netCDF file into binary

Jayakrishnan P.R prjayakrishnan at gmail.com
Wed May 18 03:51:31 EDT 2016


Try this one. Why 'define january=rainfall' and 'd rainfall' ??.....instead
of d january ?.. Also the set time 'set time Jan1950 Dec2015'
statement is inactive inside he loop. I removed that also. If still error,
then try with set x and set y.

'reinit'
'c'
'sdfopen IMD_Precip_1948-2015.nc'
'set lat 6.5 38.5'
'set lon 66.5 100'
'set fwrite jan.bin'
tt=25
while(tt<=816)
'set t 'tt
'set gxout fwrite'
'd rainfall'
tt=tt+12
endwhile
'disable fwrite'


On Wed, May 18, 2016 at 2:03 PM, Lekshmi Mudra <lekshmimdr at gmail.com> wrote:

> Before using sdfwrite, i tried 'fwrite'. The resultant binary file is
> not working. Here i'm attaching gs file for extracting monthly data
> from nc file and respective .ctl file for the monthly data.
>
> Below given are the details of .nc file for IMD rainfall from 1948-2015
> Grid coordinates :
>      1 : lonlat       > size      : dim = 17415  nx = 135  ny = 129
>                         lon       : first = 66.5  last = 100  inc =
> 0.25  degrees_east
>                         lat       : first = 6.5  last = 38.5  inc =
> 0.25  degrees_north
>    Vertical coordinates :
>      1 : surface                  : 0
>    Time coordinate :  816 steps
> >
> ga-> q file
> File 1 : Monthly cumulative rainfall
>   Descriptor: IMD_Precip_1948-2015.nc
>   Binary: IMD_Precip_1948-2015.nc
>   Type = Gridded
>   Xsize = 135  Ysize = 129  Zsize = 1  Tsize = 816  Esize = 1
>   Number of Variables = 1
>      rainfall  0  t,y,x  Rainfall
>
>
> Thank you all for the suggestions.
>
>
>
>
>
>
>
>
>
>
> On 5/18/16, Jayakrishnan P.R <prjayakrishnan at gmail.com> wrote:
> > Share your gs file along with the ctl file which you used for opening the
> > converted binary file so that someone can have a look into it for error.
> As
> > already pointed out by users, sdfwrite is for writing a file into netcdf
> > format.  Here is a sample gs file which can be used for converting OLR
> into
> > .bin file. Have a look and modify it for your purpose. Best of Luck.
> >
> > 'reinit'
> > 'sdfopen D:/computation2008/IITM_OLR_2008.nc'
> > 'set lon 62 72'
> > 'set lat 5 15'
> > prompt 'key-in file name for olr : '
> > pull fname
> > 'set fwrite 'fname
> > tt=153
> > 'set t 'tt
> > 'set gxout fwrite'
> > 'd olr'
> > 'disable fwrite'
> >
> >
> >
> > On Tue, May 17, 2016 at 8:59 PM, Mikovitz, Colleen (LARC-E302)[SCIENCE
> > SYSTEMS AND APPLICATIONS, INC] <j.c.mikovitz at nasa.gov> wrote:
> >
> >> The sdfwrite is for writing into another .nc file (sdf=self-describing
> >> format).
> >>
> >> Use ‘set gxout fwrite’  along with ‘set fwrite’   Check out the
> >> documentation on http://cola.gmu.edu/grads/gadoc/gadocindex.html for
> each
> >> of those.
> >>
> >> As a tip, make sure your x and y are set exactly to what you want
> output.
> >> For example, ‘set x 1 360’ for a one-degree grid.
> >>
> >> Colleen
> >>
> >> On May 17, 2016, at 6:18 AM, Lekshmi Mudra <lekshmimdr at gmail.com>
> wrote:
> >>
> >> > Dear All,
> >> >
> >> >         I have all India gridded (0.25 x 0.25) imd rainfall data from
> >> > 1948 to 2015, which is in .nc format. I wanted to convert the same
> >> > into .bin format. I have tried using sdfwrite command. The resulted
> >> > binary file is not working properly.
> >> > Is there any solution?
> >> >
> >> >
> >> >
> >> > Lekshmi Mudra
> >> > _______________________________________________
> >> > 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
> >>
> >
> >
> >
> > --
> > Sincerely
> >
> > **************************************************
> > Dr. Jayakrishnan P.R
> > Post Doctoral Research Fellow
> > C308, Institute of Ocean and Earth Sciences (IOES)
> > University of Malaya
> > 50603, Kuala Lumpur
> > Tel: (+603) 7967 4640 / 6995
> > Mobile: 012-3526094
> >
> > ****************************************************
> >
>
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
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>
>


-- 
Sincerely

**************************************************
Dr. Jayakrishnan P.R
Post Doctoral Research Fellow
C308, Institute of Ocean and Earth Sciences (IOES)
University of Malaya
50603, Kuala Lumpur
Tel: (+603) 7967 4640 / 6995
Mobile: 012-3526094

****************************************************
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