[gradsusr] Fw: EOF and spectral analysis on GrADS

[tcavazos at cicese.mx]

Ugo,

I run eofgrads in Unix, so I do not know about Windows.

In Unix we need to have some scripts in the Grads Library.
Since Windows does not work that way, you may need to have all the
scripts, including the "eofudf" where the Grads executable is.

Tereza


>
>
> Hi Tereza,
>
> with regards the running eof on windows, i am having problem sorting out
> the "eofudf" problem.
>
> ugo okoro
> cmsr-iqp,
> cas, beijing
>
>
>
>>________________________________
>> From: "tcavazos at cicese.mx" <tcavazos at cicese.mx>
>>To: GrADS Users Forum <gradsusr at gradsusr.org>
>>Sent: Monday, January 28, 2013 1:57 AM
>>Subject: Re: [gradsusr] Fw: EOF and spectral analysis on GrADS
>>
>>Here is the link for EOFgrads:
>>
>>http://www.atmos.ucla.edu/~munnich/Grads/EOF/
>>
>>Tereza
>>
>>
>>>  http://www.netlib.org/lapack/patch-3.0/src/
>>> for example
>>> Given a square (N,N) real non-symmetric matrix, compute the eigenvalues
>>> and, optionally, the left and/or right eigenvectors via the LAPACK
>>> subroutine :-
>>>
>>> SVD Method
>>> http://www.netlib.org/lapack/patch-3.0/src/dgeevx.f
>>>
>>> On Sun, Jan 27, 2013 at 2:21 AM, Jose <veiga.uea at gmail.com> wrote:
>>>
>>>> Dear Tamer Nada
>>>>
>>>> Thank you by your explanation and suggestions. They were clear.
>>>>
>>>> By the way do you know where can I found the fortran subroutines from
>>>> lepak library you commented?
>>>>
>>>>
>>>> Thanks in advance
>>>>
>>>> Enviado via iPad
>>>>
>>>> Em 26/01/2013, às 16:53, Tamer Nada <tamer540 at gmail.com> escreveu:
>>>>
>>>> Dear :- Jose Augusto Paixão Veiga
>>>>
>>>> In Fortran :-
>>>>
>>>> You must know there is about 3 methods ( algorithms )  to calculate
>>>> eigen
>>>> Vector and eigen Value  each method some of it efficient but just
>>>> compute
>>>> only first Eigen value and first Eigen vector by suggest value and
>>>> using
>>>> iteration methods to compute it until reach to the difference between
>>>> old
>>>> value from last iteration to new value equal small fraction you can
>>>> determine it . another to methods using "SVD "  and this method its
>>>> divided
>>>> by to relative to the shap of data matrix   and some of it efficient
>>>> but
>>>> slow and some fast and not efficient
>>>>
>>>> I suggest to you to use lepak library in fortran ( its easy to call
>>>> subroutine ) or using high level language or statistical or climatic
>>>> package like NCL or R or Matlab
>>>>
>>>> On Sat, Jan 26, 2013 at 9:56 PM, Jose Augusto Paixão Veiga <
>>>> veiga.uea at gmail.com> wrote:
>>>>
>>>>> Dear EOF expertise,
>>>>>
>>>>> one of you would have a material given instruction (if possible step
>>>>> by
>>>>> step) on how to calculate EOF?
>>>>>
>>>>> I would like to do a fortran program, from the initial point (for
>>>>> example: 1-read a 3-d matrix data, 2-calculate its inversion,
>>>>> 3-multiply it
>>>>> by its ....), to calculate EOF for climate study purposes.
>>>>>
>>>>> A flux diagram will be very appreciated.
>>>>>
>>>>> Thanks in advance.
>>>>>
>>>>>   Augusto
>>>>>
>>>>>
>>>>> On Jan 26, 2013, at 3:41 PM, Tamer Nada <tamer540 at gmail.com> wrote:
>>>>>
>>>>> on Grads No, but you can use NCL  or R to compute EOF; and Only R  or
>>>>> Matlab to Compute CCA ,But also you can Use NCL to compute "SVD" and
>>>>> after
>>>>> that you can compute CCA ,actually NCL have function to compute CCA
>>>>> ,But
>>>>> not efficient because  its use old IBM Fortran subroutine ,so its not
>>>>> work
>>>>> fine with big array of data and may be hang in calculation ,so i
>>>>> prefer
>>>>> to
>>>>> use SVD function and after that you can compute CCA
>>>>>
>>>>> On Sat, Jan 26, 2013 at 9:58 AM, ugo okoro <uknac23 at yahoo.com> wrote:
>>>>>
>>>>>>
>>>>>> Dear all,
>>>>>>
>>>>>> Please any info on how to run EOF and spectral analysis
>>>>>> (frequency-time)
>>>>>> on GrADS?
>>>>>>
>>>>>> Anticipating prompt response.
>>>>>>
>>>>>> Thanks.
>>>>>>
>>>>>> Ugo Okoro.
>>>>>> CMSR-IAP
>>>>>> CAS, Beijing.
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> gradsusr mailing list
>>>>>> gradsusr at gradsusr.org
>>>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> =====================
>>>>> *Tamer Ali Nada *
>>>>> **
>>>>> *Research Worker*
>>>>> **
>>>>> *Cairo Numerical Weather Prediction Center { CNWP}*
>>>>> **
>>>>> *Egyption Meteorological Authority   { EMA }*
>>>>> **
>>>>> *Cairo , Egypt*
>>>>>  ============================
>>>>> *tamer540 at yahoo.com
>>>>> tamer540 at gmail.com
>>>>> tamer.nada at noaa.gov*
>>>>> _______________________________________________
>>>>> gradsusr mailing list
>>>>> gradsusr at gradsusr.org
>>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> gradsusr mailing list
>>>>> gradsusr at gradsusr.org
>>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> =====================
>>>> *Tamer Ali Nada *
>>>> **
>>>> *Research Worker*
>>>> **
>>>> *Cairo Numerical Weather Prediction Center { CNWP}*
>>>> **
>>>> *Egyption Meteorological Authority   { EMA }*
>>>> **
>>>> *Cairo , Egypt*
>>>>  ============================
>>>> *tamer540 at yahoo.com
>>>> tamer540 at gmail.com
>>>> tamer.nada at noaa.gov*
>>>>
>>>> _______________________________________________
>>>> gradsusr mailing list
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>>>>
>>>>
>>>> _______________________________________________
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>>>>
>>>>
>>>
>>>
>>> --
>>> =====================
>>> *Tamer Ali Nada *
>>> **
>>> *Research Worker*
>>> **
>>> *Cairo Numerical Weather Prediction Center { CNWP}*
>>> **
>>> *Egyption Meteorological Authority   { EMA }*
>>> **
>>> *Cairo , Egypt*
>>>  ============================
>>> *tamer540 at yahoo.com
>>> tamer540 at gmail.com
>>> tamer.nada at noaa.gov*
>>> _______________________________________________
>>> gradsusr mailing list
>>> gradsusr at gradsusr.org
>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>
>>
>>
>>--
>>Tereza Cavazos
>>Departamento de Oceanografia Fisica
>>CICESE
>>Ensenada, Baja California, MEXICO
>>http://usuario.cicese.mx/~tcavazos/
>>
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-- 
Tereza Cavazos
Departamento de Oceanografia Fisica
CICESE
Ensenada, Baja California, MEXICO
http://usuario.cicese.mx/~tcavazos/