[gradsusr] extracting problem
kishoreragi at gmail.com
Tue Aug 29 08:37:39 EDT 2017
Technically, there is no difference between cdo and grads to extract.
Output should be same!
However, you can get separated files for each year with grads. You only
have to select x and y for each year that you want.
Then you can combine the separated years using cdo as the following
cdo mergetime file1.nc file2.nc file3.nc all.nc
But, I prefer using cdo command.
cdo selyear,2002,2004,2007 2000-2013.nc 200220042007.nc
hope this helps!
*PhD student in climate science,*
*National Institute of Technology, Rourkela,*
On Tue, Aug 29, 2017 at 5:55 PM, Sanjukta Rani Padhi <
sanjuktapadhi87 at gmail.com> wrote:
> Thanks sir for the commands. In CDO the ploting map is not clear , thats
> why i prefer to use Grads.
> but if my years are not serialy means x to y is not serial, then how i
> if i want 2002, 2004, 2007 from 2000-2013.nc data set. kindly help.
> On Tue, Aug 29, 2017 at 5:42 PM, Kishore Ragi <kishoreragi at gmail.com>
>> You can use cdo to extract data from th large file.
>> use the following command
>> cdo selyear,2010,2011,2012,etc inputfile.nc outfile.nc
>> or if you want to stick to grads and want to extract few years, here are
>> the steps you should take
>> sdfopen yourfile.nc
>> set t x y
>> define var=var
>> set sdfwrite subset.nc
>> sdfwrite var
>> where x and y are initial and final timestep you want in your required
>> subset file.
>> This clearly shows that the former process is much easier. If I were you,
>> I would use cdo to accomplish as I am bit lazy.
>> *PhD student in climate science,*
>> *National Institute of Technology, Rourkela,*
>> *India- 769008*
>> *Phone: +91-8908671881
>> On Tue, Aug 29, 2017 at 5:24 PM, Sanjukta Rani Padhi <
>> sanjuktapadhi87 at gmail.com> wrote:
>>> Hi All,
>>> I am new in Grads. I want to know how to extract some years from a .nc
>>> file having some large no of years.
>>> gradsusr mailing list
>>> gradsusr at gradsusr.org
>> gradsusr mailing list
>> gradsusr at gradsusr.org
> gradsusr mailing list
> gradsusr at gradsusr.org
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