[gradsusr] extracting problem

[Sanjukta Rani Padhi]

can I know the codes  to plot a DJF  (december, january, february) from a
.nc file. thanks.

On Tue, Aug 29, 2017 at 6:32 PM, Sanjukta Rani Padhi <
sanjuktapadhi87 at gmail.com> wrote:

> yes it help. thank you sir.
>
>
> On Tue, Aug 29, 2017 at 6:07 PM, Kishore Ragi <kishoreragi at gmail.com>
> wrote:
>
>> 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!
>>
>> Regards,
>> Kishore
>>
>>
>> *PhD student in climate science,*
>>
>> *National Institute of Technology, Rourkela,*
>>
>> *India- 769008*
>>
>>
>>
>>
>>
>> *Phone: +91-8908671881http://www.researchgate.net/profile/Kishore_Ragi
>> <http://www.researchgate.net/profile/Kishore_Ragi>https://in.linkedin.com/in/kishoreragi
>> <https://in.linkedin.com/in/kishoreragi>*
>>
>> 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
>>> set.
>>> 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>
>>> wrote:
>>>
>>>> Hi,
>>>>
>>>> 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.
>>>>
>>>> Cheers,
>>>> Kishore
>>>>
>>>>
>>>> *PhD student in climate science,*
>>>>
>>>> *National Institute of Technology, Rourkela,*
>>>>
>>>> *India- 769008*
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> *Phone: +91-8908671881
>>>> <+91%2089086%2071881>http://www.researchgate.net/profile/Kishore_Ragi
>>>> <http://www.researchgate.net/profile/Kishore_Ragi>https://in.linkedin.com/in/kishoreragi
>>>> <https://in.linkedin.com/in/kishoreragi>*
>>>>
>>>> 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.
>>>>> thanks
>>>>>
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>>>>>
>>>>>
>>>>
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>>>
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>>
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>
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