Re: [science-iwg] FFT Java Library

[Ian Mayo <ian@xxxxxxxxxxxxx>]

I encountered the term "low-pass" for the first time about an hour
ago.  It's an area of mathematics that is new to me.

Let every day be a school day.

Ian

On 17 November 2016 at 12:16, Jonah Graham <jonah@xxxxxxxxxxxxxxxx> wrote:
> Hi Ian,
>
> Can you do this with a low-pass-FIR?
>
> Jonah
>
> ~~~
> Jonah Graham
> Kichwa Coders Ltd.
> www.kichwacoders.com
>
>
> On 17 November 2016 at 12:11, Ian Mayo <ian@xxxxxxxxxxxxx> wrote:
>> Philip,
>> I'd be interested in hearing how you get on.  Today I'm taking my
>> first steps into FFTs, trying to separate the small oscillations from
>> the larger changes in a time series like this:
>> https://imgur.com/iZSFDmh
>>
>> I look forward to your lessons learned :-)
>>
>> Ian
>>
>>
>> On Thu, Nov 17, 2016 at 9:41 AM, Philip Wenig
>> <philip.wenig@xxxxxxxxxxxxx> wrote:
>>> Yep, thanks :-).
>>>
>>>
>>> Am 16.11.2016 um 16:43 schrieb Jay Jay Billings:
>>>
>>> Keep in mind that FFTW is licensed under the GPL.
>>>
>>> Jay
>>>
>>> On Wed, Nov 16, 2016 at 9:56 AM, Philip Wenig <philip.wenig@xxxxxxxxxxxxx>
>>> wrote:
>>>>
>>>> Hi Serban,
>>>>
>>>> thanks a lot.
>>>> It's clear now, what I'll do tomorrow .-).
>>>>
>>>>
>>>> Best,
>>>> Philip
>>>>
>>>> Am 16.11.2016 um 15:51 schrieb Serban Maerean:
>>>>
>>>> Apparently, there are a few options, from Java wrappers to the FFTW to
>>>> native Java implementations of FFTW:
>>>>
>>>> http://www.fftw.org/download.html-> they mention 2 choices here, in
>>>> sections "Calling FFTW from Other Languages"
>>>>
>>>> https://sites.google.com/site/piotrwendykier/software/jtransforms-> this
>>>> is a native implementation of FFT in Java that is already used by a few
>>>> projects. (maybe your best bet)
>>>>
>>>> http://carsomyr.github.io/shared/-> this is a more diversified scientific
>>>> package, but it mentions that it provides multidimensional FFT operations
>>>> backed by FFTW3.
>>>>
>>>> Hope this helps.
>>>>
>>>> Serban Maerean
>>>> HPC Tools
>>>> T/L: 293-9770, Tel.: 845-433-9770
>>>> E-mail: serban@xxxxxxxxxx
>>>>
>>>>
>>>>
>>>> From:        Philip Wenig <philip.wenig@xxxxxxxxxxxxx>
>>>> To:        Science Industry Working Group <science-iwg@xxxxxxxxxxx>
>>>> Date:        11/16/2016 09:23 AM
>>>> Subject:        [science-iwg] FFT Java Library
>>>> Sent by:        science-iwg-bounces@xxxxxxxxxxx
>>>> ________________________________
>>>>
>>>>
>>>>
>>>> Does anyone can recommend a good java-based fast fourier transformation
>>>> (FFT) library?
>>>>
>>>>
>>>> Best,
>>>> Philip
>>>>
>>>> --
>>>> ~~~~~~~~~~~~~~~~~~~~~~~~
>>>> OpenChrom - the open source alternative for chromatography / mass
>>>> spectrometry
>>>> Dr. Philip Wenig » Founder » philip.wenig@xxxxxxxxxxxxx »
>>>> http://www.openchrom.net
>>>> ~~~~~~~~~~~~~~~~~~~~~~~~
>>>>
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>>>>
>>>>
>>>> --
>>>> ~~~~~~~~~~~~~~~~~~~~~~~~
>>>> OpenChrom - the open source alternative for chromatography / mass
>>>> spectrometry
>>>> Dr. Philip Wenig » Founder » philip.wenig@xxxxxxxxxxxxx »
>>>> http://www.openchrom.net
>>>> ~~~~~~~~~~~~~~~~~~~~~~~~
>>>>
>>>>
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>>>
>>>
>>>
>>>
>>> --
>>> Jay Jay Billings
>>> Oak Ridge National Laboratory
>>> Twitter Handle: @jayjaybillings
>>>
>>>
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>>>
>>> --
>>> ~~~~~~~~~~~~~~~~~~~~~~~~
>>> OpenChrom - the open source alternative for chromatography / mass
>>> spectrometry
>>> Dr. Philip Wenig » Founder » philip.wenig@xxxxxxxxxxxxx »
>>> http://www.openchrom.net
>>> ~~~~~~~~~~~~~~~~~~~~~~~~
>>>
>>>
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-- 
Ian Mayo
Deep Blue C Technology Ltd
- New technologies, implemented well