[gradsusr] How to combine the different nc files to calculate the mean and SD? Thanks.

Mon Jan 7 22:55:34 EST 2013

Hi,Thank you everyone!

But I faced another problem as the following figure
[image: Inline image 1]

Unsupported file type??  I have already installed the
"libs4cdo-0.0.10<https://code.zmaw.de/versions/show/140>",
and then installed the CDO. Of course, I have configured everything
according to the manual as follows.
I [image: Inline image 2]

Do I need to put the
libs4cdo-0.0.10<https://code.zmaw.de/versions/show/140> into
the cdo-1.5.9?  I thought it already supports the NC files.

So, how can I solve this problem.  Thank you very much!

Best regards!

On Tue, Jan 8, 2013 at 12:19 AM, Serge Claudio Rafanoharana <
rafanoharana at gmail.com> wrote:

> Hi,
>
> Please refer to the CDO manual (attached). You can have a look at
> mergetime (mentioned by Kishore), cdo info or cdo infon (will give you min,
> mean, max, ...) and the std also is there.
>
> Hope it can help.
>
> Cheers,
> Serge
>
>
>
> On Mon, Jan 7, 2013 at 8:54 PM, Kishore Babu <kishoreragi at gmail.com>wrote:
>
>> Hi,
>>
>> you can play very easily with nc file with simple handling cdo commands..
>>
>> As per your question, you want to add many files into a single file
>> containing same variable for a longer time.
>>
>> I hope that you have installed cdo. If yes, just invoke the following
>> command ...
>>
>> cdo mergetime input1.nc input2.nc input3.nc ........... output.nc
>>
>> That's it! you are done !!!  your output file contains all the time you
>> need..
>>
>> Cheers,
>>
>> Kishore
>>
>>
>> On Mon, Jan 7, 2013 at 5:49 PM, 2008 duan <duan.scut.cn at gmail.com> wrote:
>>
>>> Dear Everyone,
>>>
>>>         Happy New Year!
>>>
>>>         Now I have a question to ask you. Thank you very much!
>>>
>>>  'reinit'
>>>
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1981.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1982.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1983.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1984.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1985.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1986.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1987.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1988.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1989.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1990.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1991.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1992.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1993.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1994.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1995.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1996.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1997.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1998.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.1999.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.2000.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.2001.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.2002.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.2003.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.2004.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.2005.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.2006.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.2007.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.2008.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.2009.nc'
>>> 'sdfopen D:\TDDOWNLOAD\hgt.2010.nc'
>>> 'set mpdset hires'
>>> yr=1981
>>> while(yr<=2010)
>>>
>>> *******************************************************
>>> *Standard deviation will be caculated
>>> 'set lat 0 50.5'
>>> 'set lon 119.5 179.5'
>>>
>>>
>>> 'define mean=ave(hgt.'yr',time=01JAN'yr',time=31DEC'yr')'
>>> 'define sd=sqrt(ave(pow(hgt.'yr'-mean,2),time=01JAN'yr',time=31DEC'yr'))'
>>>
>>> *********************************************************
>>> *This is a skill to plot a shaded map with contour on it
>>> 'set grads off'
>>> 'set gxout shaded'
>>> 'd sd'
>>> 'cbarn'
>>> 'set gxout contour'
>>> 'set cthick 5'
>>> 'd sd'
>>> 'draw title Standard Deviation of 'yr' '
>>> 'printim D:\TDDOWNLOAD\'yr'.png x1000 y800 white'
>>> 'c'
>>> yr=yr+1
>>> endwhile
>>> ;
>>>
>>> I donot know where are the wrongs.  I want to figure out the mean and SD between 1981 to 2010.
>>>
>>> I want to ask how to combine the files containing hgt.1981.nc to hgt.2010.nc. If it is a single file, I think it is easy to figure out the mean and SD.
>>>
>>> Thank you everyone!
>>>
>>>
>>> --
>>> Weili Duan
>>> Disaster Prevention Research Institute (DPRI), Kyoto University, Uji,
>>> Kyoto 611-0011, Japan
>>> TEL: +81-774-38-4131 FAX: +81-774-38-4130
>>> E-mail: duan.scut.cn at gmail.com
>>>            duanwl1986 at flood.dpri.kyoto-u.ac.jp<dyuan.weiri.88r at st.kyoto-u.ac.jp><dyuan.weiri.88r at st.kyoto-u.ac.jp>
>>>
>>> _______________________________________________
>>> gradsusr mailing list
>>> gradsusr at gradsusr.org
>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>
>>>
>>
>> _______________________________________________
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>>
>>
>
>
> --
> Serge
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>
>

-- 
Weili Duan
Disaster Prevention Research Institute (DPRI), Kyoto University, Uji, Kyoto
611-0011, Japan
TEL: +81-774-38-4131 FAX: +81-774-38-4130
E-mail: duan.scut.cn at gmail.com
           duanwl1986 at flood.dpri.kyoto-u.ac.jp<dyuan.weiri.88r at st.kyoto-u.ac.jp><dyuan.weiri.88r at st.kyoto-u.ac.jp>
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