[gradsusr] Fw: EOF and spectral analysis on GrADS

[Tamer Nada]

see this
http://www.atmos.ucla.edu/~munnich/Grads/EOF/
On Mon, Jan 28, 2013 at 6:49 PM, <tcavazos at cicese.mx> wrote:

> 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
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> >>>>> 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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> >>>> 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
> >>>
> >>
> >>
> >>--
> >>Tereza Cavazos
> >>Departamento de Oceanografia Fisica
> >>CICESE
> >>Ensenada, Baja California, MEXICO
> >>http://usuario.cicese.mx/~tcavazos/
> >>
> >>_______________________________________________
> >>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
> >
>
>
> --
> Tereza Cavazos
> Departamento de Oceanografia Fisica
> CICESE
> Ensenada, Baja California, MEXICO
> http://usuario.cicese.mx/~tcavazos/
>
> _______________________________________________
> 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*
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