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

Mon Jan 7 23:43:02 EST 2013

hi,

I also faced that problem at the beginning. Just install CDO from source by
following the instruction given there.

Cheers,

Kishore

On Tue, Jan 8, 2013 at 9:25 AM, 2008 duan <duan.scut.cn at gmail.com> wrote:

> 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>
>>>>
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>>>>
>>>
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>>>
>>
>>
>> --
>> Serge
>> _______________________________________________
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>>
>>
>
>
> --
> 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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>
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