[ncl-talk] Hilbert transform

[Dennis Shea]

There is nothing distributed with NCL: documented or otherwise.

An untested and undocumented simple demodulation function is attached.
It used to be in the  'shea_util.ncl' library but I removed it for
some forgotten reason.

Commonly, a low pass filter is passed over the returned results. This
is trivial for the amplitude spectrum. However, filtering a quantity
like phase can be an issue.

Unless you have theory to guide you, how do you pick the frequency?

===
Filters .. http://www.ncl.ucar.edu/Applications/filter.shtml
.

On Wed, Aug 26, 2015 at 10:04 AM, Thomas Tobian <thomastobian at gmail.com> wrote:
> Hi folks,
>
> Do we have any functions (perhaps undocumented) for computing complex
> demodulation or a Hilbert transform ? Thanks in advance.
>
>
> Cheers,
> Thomas Tobian,
>
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