NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Precise index correction: was- Eye problems and IE, IC
From: Alexandre Eremenko
Date: 2006 Jul 14, 03:06 -0500
George,
> Just let's start by eliminating one possible confusion, as these
> matters are already complex enough. In the same posting, Bill has used
> the same abbreviation, SD, which I take to refer to Standard Deviation
> and to Semi Diameter. Those terms should instead be spelled out, to
> avoid that confusion.
I think one can always see from context which SD Bill is talking about,
but if we want to decide on a different abbreviation, I proipose
"sigma" for the standard deviation, which is consistent with
the standard mathematical notation for it by a Greek letter,
and will never be confused with anything else.
Alex.
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From: Alexandre Eremenko
Date: 2006 Jul 14, 03:06 -0500
George,
> Just let's start by eliminating one possible confusion, as these
> matters are already complex enough. In the same posting, Bill has used
> the same abbreviation, SD, which I take to refer to Standard Deviation
> and to Semi Diameter. Those terms should instead be spelled out, to
> avoid that confusion.
I think one can always see from context which SD Bill is talking about,
but if we want to decide on a different abbreviation, I proipose
"sigma" for the standard deviation, which is consistent with
the standard mathematical notation for it by a Greek letter,
and will never be confused with anything else.
Alex.
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to NavList@fer3.com
To , send email to NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---
