[gradsusr] EOF / User Defined Functions (UDF) in Opengrads

[Arlindo da Silva]

2012/1/26 Hyacinth Nnamchi <hyacinth.1 at hotmail.com>

>  Hello Grads users,
>
> I want to compute EOF using the Matthias Munnich code (
> http://www.atmos.ucla.edu/~munnich/Grads/EOF/). However, the installation
> instruction is based on the COLA build of Grads, but I'm using the
> Opengrads version. So the installation instruction on the said page as well
> as on a previous mail  on this user-group (
> http://gradsusr.org/pipermail/gradsusr/2010-November/011765.html) does
> not apply in my case.
>
> It's seems the major issue is how to deal with the User Defined Function
> included in the zipped file. Where is the "eofudf" supp! osed to be
> installed in Opengrads, and how do I do that ? I tried placing it in the
> .../SupportData/tables or in ....../Scripts folder, but that doesn't work.
>
> I use opengrads v2.0.a9 on Linux (laptop and server). Windows is also an
> option but "eofudf.exe" fails to run when I tried it on Windows XP, also on
> Opengrads.
>
> Is anyone out there using the code in Opengrads on Windows or Linux ?
> Please kindly share your experience(s) with me.
>
>
The issue here is not COLA vs OpenGrADS releases of GrADS, but the fact
that UDFs from grads v1.9 no longer works with GrADS v2.0. OpenGrADS has a
mechanism for adding UDFs but no one has ported Matt's EOF package to open
grads.  If you are willing to use pygrads, there is functionality there to
compute EOFs, see

   http://opengrads.org/wiki/index.php?title=Python_Interface_to_GrADS


http://opengrads.org/wiki/index.php?title=PyGrADS_Interactive_Shell#Computing_EOFs

   Arlindo




> Thanks in advance,
>
> Hyacinth
>
>
> **
>
>
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-- 
Arlindo da Silva
dasilva at alum.mit.edu
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