commons-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Bernd Porr <>
Subject Re: [complex] commons-complex module
Date Tue, 25 Oct 2016 22:49:23 GMT
Hi all,

I agree that 'filter' is slightly problematic but I'd say because it's 
been used in different contexts and often misleading. However, I cannot 
think of a better word. That also depends where we place 2D image 
processing. They are also called filters. For IIR , Kalman(and possibly 
FIR) filters these are causal digital filters as they essentially behave 
as an analogue circuit in a digital form. For the casual (!) user of 
filters they'd probably just look for a filter...


On 25-Oct-16 23:00, Gary Gregory wrote:
> On Tue, Oct 25, 2016 at 12:07 PM, Eric Barnhill <>
> wrote:
>> On Tue, Oct 25, 2016 at 7:32 PM, Gary Gregory <>
>> wrote:
>>> I am against this constant spinning out.
>>> Gary
>> The proposed commons-filter is not a spin out. There was one filter in math
>> and it didn't belong there. Now we have at least couple of people around
>> who know signal processing and would like to make a commons-filter package.
>> Virtually none of which is coming from commons-math except dependencies.
>> Does such a package suit commons? I think so. Filtering is needed from
>> image processing to statistics. Others can vote no if they disagree.
>> Complex was in math too. Did it belong there? In C++ or Python, complex is
>> just another data type, like String. Its placement in math was not
>> straightforward. A self contained component to handle complex data types
>> seems more sensible to me than having it in Math. In any case Gilles is
>> making me a branch to populate, so that I can propose this component later,
>> IIUC.
> It sounds like you can create your new component on top of math4, correct?
> You do not need anything else? Aside from a better component name IMO.
> "filter" is way to generic for me.
> Gary
>> Eric

+44 (0)7840 340069

To unsubscribe, e-mail:
For additional commands, e-mail:

View raw message