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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Another "emergency navigation" sight reductionmethod
From: Hanno Ix
Date: 2015 Jul 16, 17:41 -0700
Hmmm, it assumes, though, people can multiply and do it in their heads.
We will see.
H
From: Hanno Ix
Date: 2015 Jul 16, 17:41 -0700
Greg,
aha! Makes sense!On Thu, Jul 16, 2015 at 5:16 PM, Greg Rudzinski <NoReply_Rudzinski@fer3.com> wrote:
Hanno,
For the log sin cos table extract attached. The difference between the logs for 40° 20' and 40° 30' is 14. This works out to 1.4 per 1'. If the look up is lets say 40° 22' then the log would be 18.89 - 3 (rounding 2.8 to 3) = 18.86. No need to write anything down to do this.
From: Hanno Ix
Date: 2015 Jul 16, 12:28 -0700Greg,
sorry, I did not understand your interpolation method.I just cannot follow your compact notation.Could you please give me a detailed example?Also, I see I lost the original file logAB$$.xls, so I will have to recreate it.No issue, but patience please!
Just so you can pick from a bowl of cherries, I will take this opportunityto also create the normalized version I spoke of before.You will decide.
H
Attached File:
(Interpolation-Ex..PNG: Open and save)
