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<p>Lekshmi,</p>
<p>There might be a problem with the resolution. You are better off
using "set x 1 135" and "set y 1 129" instead of "set lon 66.5
100" and "set lat 6.5 38.5". As a simple check, your created file
should be 4*135*129*66; I suspect it might not be (you are likely
not getting 135 lons and 129 lats).<br>
</p>
<p>Also, I'm not sure if it matters, but your control file seems to
mix syntax. You have "rainfall 0 t,x,y Rainfall" which works for
netcdf files, but I don't think the (t,x,y) is needed for GrADS
binary files.</p>
<p>Jim<br>
</p>
<br>
<div class="moz-cite-prefix">On 5/17/16 8:03 PM, Lekshmi Mudra
wrote:<br>
</div>
<blockquote
cite="mid:CAHKw=-D4-e89m7g09vEV9T6Tb+WZax7HRud0zXuHLnPHn9tAEw@mail.gmail.com"
type="cite">
<pre wrap="">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
</pre>
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<pre wrap="">
</pre>
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<pre wrap="">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 <a class="moz-txt-link-rfc2396E" href="mailto:prjayakrishnan@gmail.com"><prjayakrishnan@gmail.com></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">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] <a class="moz-txt-link-rfc2396E" href="mailto:j.c.mikovitz@nasa.gov"><j.c.mikovitz@nasa.gov></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">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 <a class="moz-txt-link-freetext" href="http://cola.gmu.edu/grads/gadoc/gadocindex.html">http://cola.gmu.edu/grads/gadoc/gadocindex.html</a> 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 <a class="moz-txt-link-rfc2396E" href="mailto:lekshmimdr@gmail.com"><lekshmimdr@gmail.com></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">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
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<pre wrap="">
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</blockquote>
<pre wrap="">
--
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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