Welcome to the NavList Message Boards.


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

Compose Your Message

Add Images & Files
    Re: Location without DR
    From: Marco A. Costa
    Date: 2018 Feb 21, 06:59 -0800

    Hi all:

    Thanks four the feedback.

    I can see that what has generated more interest is the randomization of the initial globe position.

    If wanting to limit the latitude range to more "navigational" areas (even though as we all know climate change is altering this pretty fast), the line for the latitude can be altered for example to :rand120-60=A. This also will decrease the perception of locations being concentrated near the poles.

    Again, the purpose was to generate "randomly" (keeping in mind that in computers this comes from a formula), a Position with three faked GPs with their respective GHA, Ho and Dec (with Ho values 15-75 and Zs 90-120 from each other), to be used to test CelNav programs. If you come across an instance of a position where the values do not make sense please let me know and should help me to better tune the program.

    Thanks again.


    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    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 Settings

    Posting Code:

    Custom Index

    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