bandpass Lanczos filter in wavenumber domain

[Henrique Barbosa]

Dear S. De,

First of all, you will need the algorithm for that.
Than you have to decide if you will try to do it:

1) inside grads, using the grads scripting language
2) or if you will write a separate program that is called
from grads as a user defined function
3) or if you will do all the calculation in the program
outside grads and use grads only a visualization
tool for your results.

The best option will depend... Are you a better
grads or fortran programmer? How often you will
need this tool? How much data you will have to
analyze? and things like that.

I do have a pdf file with the original paper by Lanczos
that I can send to you, if you like. I may also
already have a fortran code for doing it, if you
need it, but I have to find it.

Cheers,
Henrique

On 11/1/06, S.De <sde at tropmet.res.in> wrote:
> Dear All,
>           Can anybody help how to get the bandpass Lanczos filter in wavenumber domain
> in GrADS. Thanks in advance.
> S. De
> ******************
> Saumyendu De
> Theoretical Studies Division
> Indian Institute of Tropical Meteorology
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> e-mail: sde at tropmet.res.in
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