Re: obj_anal_ic

This is due to a bug in the wrapper code. The work-around is to make the missing values for your lat/lon arrays and the data value the same before you call this routine.

--Mary

On Nov 17, 2010, at 7:37 AM, flyyks wrote:

> Thank you very much.
>
> info. as follow,
> (1) ncl -V
> NCAR Command Language Version 5.2.1
> (2) uname -a
> Linux node1 2.6.9-67.ELsmp #1 SMP Wed Nov 7 13:56:44 EST 2007 x86_64 x86_64 x86_64 GNU/Linux
> (3) file names
> test_obj_anal.zip
>
>
>
> 2010-11-17
> flyyks
> 发件人： Dennis Shea
> 发送时间： 2010-11-17 14:52:20
> 收件人： flyyks
> 抄送： ncl-talk
> 主题： Re: [ncl-talk] obj_anal_ic
> It should recognize missing values.
> Do you have a *simple, clean* version of your NCL script and the data?
> If so you can ftp bothe to
> ftp ftp.cgd.ucar.edu
> anonymous
> Use your email address for the password
> cd incoming
> put ...
> put ...
> quit
> Send us an email with the following information:
> * The names of the files after you have successfully completed the
> transfer.
> We cannot look at the ftp/incoming directory for security reasons.
> * The version of NCL you are running (ncl -V).
> * The type of system you are on (uname -a).
> On 11/17/10 5:18 AM, flyyks wrote:
> > it seems this "obj_anal_ic" in v5.2 cannot recognize missing values.
> > the missing values in my station data is -999.9. after the calculation,
> > some points have value like -997.
> > i change missing value to 1e+20, then the result is 9.99533e+19.
> > 2010-11-17
> > ------------------------------------------------------------------------
> > flyyks
> > ------------------------------------------------------------------------
> > *发件人：* Dennis Shea
> > *发送时间：* 2010-07-06 19:10:02
> > *收件人：* "羘gel_G._Mu駉z"
> > *抄送：* ncl-talk
> > *主题：* Re: [ncl-talk] obj_anal_ic
> > OK ... I see the issue.
> > The v5.1.0 contributed.ncl had
> > http://www.ncl.ucar.edu/Document/Functions/Contributed/obj_anal_ic.shtml
> > This *NCL language* function was *slow* when a large number of values
> > were input. Hence, I replaced it with a fortran version.
> > The fortran had several additional features including the ability
> > to 'blend' different iterations. Likely, that is where the differences
> > occurred.
> > ===
> > You can still use the original function by using the undocumented
> > function in contributed.ncl called
> > function obj_anal_deprecated (....)
> > This is te original v5.1.0 version .... just a different name.
> > ===
> > Also, you may wish to look at the Application URL "Random data to grid"
> > http://www.ncl.ucar.edu/Applications/rdm2grid.shtml
> > It shows several different interpolations.
> > ===
> > Good luck
> > D
> > On 07/06/2010 11:33 AM, Mary Haley wrote:
> > > Hi,
> > >
> > > The obj_anal_ic routine wasn't available until version 5.2.0, so I'm
> > > not sure what you mean by using it in version 5.1.0.
> > >
> > > When you type "ncl -V" with the ncl that appears to be working, does
> > > it actually say "5.1.0"?
> > >
> > > --Mary
> > >
> > > On Jul 6, 2010, at 10:58 AM, Ángel G. Muñoz wrote:
> > >
> > >> Hi there
> > >>
> > >> Can anyone explain me what is the new algorithm for the
> > >> obj_anal_ic(_Wrap) function in version 5.2. I have been using the
> > >> one in 5.1.0 (which corresponds to a Cressman analysis) and there
> > >> are differences in the final output. I want to understand the new
> > >> methodology.
> > >>
> > >> Thanks
> > >>
> > >>
> > >> <agmunoz.vcf>_______________________________________________
> > >> ncl-talk mailing list
> > >> List instructions, subscriber options, unsubscribe:
> > >> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
> > >
> > > _______________________________________________
> > > ncl-talk mailing list
> > > List instructions, subscriber options, unsubscribe:
> > > http://mailman.ucar.edu/mailman/listinfo/ncl-talk
> > --
> > ======================================================
> > Dennis J. Shea tel: 303-497-1361 |
> > P.O. Box 3000 fax: 303-497-1333 |
> > Climate Analysis Section |
> > Climate & Global Dynamics Div. |
> > National Center for Atmospheric Research |
> > Boulder, CO 80307 |
> > USA email: shea 'at' ucar.edu |
> > ======================================================
> > _______________________________________________
> > ncl-talk mailing list
> > List instructions, subscriber options, unsubscribe:
> > http://mailman.ucar.edu/mailman/listinfo/ncl-talk
> >
> >
> >
> > _______________________________________________
> > ncl-talk mailing list
> > List instructions, subscriber options, unsubscribe:
> > http://mailman.ucar.edu/mailman/listinfo/ncl-talk
> _______________________________________________
> ncl-talk mailing list
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk

_______________________________________________
ncl-talk mailing list
List instructions, subscriber options, unsubscribe:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk
Received on Wed Nov 17 13:09:15 2010