Samuel (and Christophe),
I apologize for mixing up your names. My reply was intended for
Christophe, not Samuel.
Regards,
Federico Miyara
-------- Forwarded Message --------
Subject: Re: [Scilab-users] Why window() provides only symmetric
weighting?
Date: Mon, 12 Apr 2021 12:19:08 -0300
From: Federico Miyara <[email protected]>
Reply-To: Users mailing list for Scilab <[email protected]>
To: [email protected]
Samuel:
As a general concept, you are right ... but with nuances. The problem is
deciding when something is really wrong and when it is just a question
of opinion or personal preference. It is wrong to say the Earth is flat,
no matter how many people say it. But is it right or wrong to call
something just a conventional name?
For instance: Is it right to call the derivative of a function
"derivative"? Probably not, because "derivative" is a general concept
which seems to have no relationship with its meaning in math. Probably
in its origins it was more related to grammar than to math. But once
established for centuries, it wouldn't be convenient to change it on the
basis that it is "wrong".
By the same token, calling "periodic" a window function obtained from
periodic functions (cosines) whose period is equal to its length doesn't
seem intrinsically wrong to me. Calling it "closed" would be worse since
one immediately thinks either of a closed set, which is not, or a closed
curve, which isn't either.
But even if we found a better word, changing it would very likely create
an unnecessary cognitive dissonance to thousands or millions of
practitioners.
Anyway, if a much better and cristal-clear word (i.e., whose meaning
would be immediately obvious in its context) were found and gained
consensus, no problem to use it instead of "periodic". The important
thing in my proposal was to include in the window() function the
feature, not how we call it.
Regards,
Federico Miyara
On 12/04/2021 04:22, Dang Ngoc Chan, Christophe wrote:
Hello,
De : Federico Miyara
Envoyé : dimanche 11 avril 2021 02:08
Like it or not, I guess these keywords come from Matlab, and as Matlab
still seems to dominate the market, many people, including those
willing to quit Matlab (as I did several years ago), are quite used to
those keywords
I don't agree with this argument.
If a way of doing is wrong, then just keep on going because "everybody does so"
is just an argumentum ad populum
https://en.wikipedia.org/wiki/Argumentum_ad_populum
which is a fallacious argument.
Regards.
--
Christophe Dang Ngoc Chan
Mechanical calculation engineer
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