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    Re: Another "emergency navigation" sight reductionmethod
    From: Hanno Ix
    Date: 2015 Jul 16, 17:41 -0700
    Greg,

    aha!  Makes sense!

    Hmmm, it assumes, though, people can multiply and do it in their heads.
    We will see.

    H

    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 -0700

    Greg,
     
    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 opportunity
    to also create the normalized version I spoke of before.
    You will decide.
     
    H


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