Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Re: Rejecting outliers
    From: Gary LaPook
    Date: 2011 Jan 8, 03:26 -0800

    Some more thoughts.

    My data set didn't reveal the possible advantage of the slope technique because there were no outliers to eliminate, the shooting was too good. This doesn't show that that technique would not have been valuable for a data set with more scatter.

    You quickly reach the point of diminishing returns when taking many shots of a body to average because of the square root law so 5 or 6 shots might be optimum.

    If you are going to use the slope technique it makes sense to apply the template early in the process before you have done a lot of computation on data that you may end up throwing out, so you should work with the raw sextant altitudes.

    gl
    ----------------------------------------------------------------
    NavList message boards and member settings: www.fer3.com/NavList
    Members may optionally receive posts by email.
    To cancel email delivery, send a message to NoMail[at]fer3.com
    ----------------------------------------------------------------

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.
    Email:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site