[time-nuts] time-nuts Digest, Vol 198, Issue 31

Magnus Danielson magnus at rubidium.se
Sun Jan 24 21:37:09 UTC 2021


Dear Demetrios,

Many thanks, and be assured that I find great delight in reading your
posts and comments on and off list. We all have our focus on something,
and sometimes we just miss to see things even if it's just in front of
us. I keep doing the same regularly, but then again, by making mistakes
we keep learning, and the quicker we get those friendly comments of
feedback, the quicker we can move on and not waste time and energy where
not needed. That is how we progresses. Also, sometimes trying to answer
these questions, I learn things myself.

So, let's keep making honest mistakes and learn from each other as we
resolve them! :)

Cheers,
Magnus

On 2021-01-24 22:09, Demetrios Matsakis via time-nuts wrote:
> Magnus,
>
> Every time I read one of your posts, I know I will learn something.  Thank you so much for correcting the mis-information I had spread!
>
> Demetrios, who isn’t done making mistakes.
>
>> On Jan 23, 2021, at 12:00 PM, time-nuts-request at lists.febo.com wrote:
>>
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>> Today's Topics:
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>>   1. Re: irregular data and Stable32 (Magnus Danielson)
>>
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>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Fri, 22 Jan 2021 18:57:00 +0100
>> From: Magnus Danielson <magnus at rubidium.se>
>> To: time-nuts at lists.febo.com
>> Subject: Re: [time-nuts] irregular data and Stable32
>> Message-ID: <97c0ea02-bde6-f83c-11a9-c86a7f42b491 at rubidium.se>
>> Content-Type: text/plain; charset=utf-8
>>
>> Dear Demetrios,
>>
>> On 2021-01-20 20:02, Demetrios Matsakis via time-nuts wrote:
>>> I think I deleted the duplicate posts relevant to data gaps in deviation statistics, and apologize if I took anybody?s out.
>>>
>>> In my personal software I don?t deal with outliers or data gaps by interpolating, spline-fitting, or any other fancier things.    Instead I compute the standard statistical measures by simply ignoring terms in the summation that hit upon a data gap or outlier. 
>>>
>>> I don?t think Stable32 does that, so I?d like to pose this challenge to anyone interested in serving the community:  Assuming IEEE will make the source code available, can the approach I use be made an option?    And yes, I know that the uncertainties of the deviation points get hard to compute, but such issues can be warned about in the documentation, if not addressed.
>> Stable32 already does this. This is documented in "Handbook of Frequency
>> Stability Analysis" by W.J. Riley of Hamilton Technical Services, of
>> which essentially the same content is available as NIST SP 1065. In
>> addition, you also find it documented in "User manual, Stable32
>> Frequency Stability Analysis" of Hamilton Technical Services. A quick
>> look into the source code confirms this.
>>
>> License-wise, most part of the code was already provided under a
>> MIT-style license, it has just not been generally released. We should
>> work to make it available, but there is a few loops to jump through to
>> ensure it gets done right.
>>
>> Cheers,
>> Magnus
>>
>>
>>
>>
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>> End of time-nuts Digest, Vol 198, Issue 31
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