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
    Posting Statistics / Proposal
    From: Dan Allen
    Date: 2001 Jul 21, 3:34 PM

    NAVIGATION-L{at}LISTSERV.WEBKAHUNA.COM Statistics
    
    I joined this mailing list in July of 1997.  I have saved most (not all) of
    the email that has gone through the list.  I wrote an Awk script to scan the
    headers of all of the postings and here is what I learned.
    
    Here is a histogram of the posting frequencies:
    
    [         0 ..         15)  N = 164 (86%)    Sum = 459 (32%)
    [        15 ..         30)  N =  14 ( 7%)    Sum = 275 (19%)
    [        30 ..         45)  N =   7 ( 3%)    Sum = 265 (18%)
    [        45 ..         60)  N =   2 ( 1%)    Sum = 107 ( 7%)
    [        60 ..         75)  N =   0 ( 0%)    Sum =   0 ( 0%)
    [        75 ..         90)  N =   1 ( 1%)    Sum =  86 ( 6%)
    [        90 ..        105)  N =   1 ( 1%)    Sum =  97 ( 7%)
    [       105 ..        120)  N =   0 ( 0%)    Sum =   0 ( 0%)
    [       120 ..        135)  N =   0 ( 0%)    Sum =   0 ( 0%)
    [       135 ..        150)  N =   0 ( 0%)    Sum =   0 ( 0%)
    [       150 ..        INF)  N =   1 ( 1%)    Sum = 151 (10%)
    
                 Items      190
                   Sum      1,440
               Minimum      1
               Maximum      151
                 Range      150
                  Mean      7.6
         Harmonic Mean      1.7
        Geometric Mean      2.8
              RMS Mean      18.3
          Sample Stdev      16.7
      Population Stdev      16.7
    
    ---
    
    Here is how your read this: There were 190 different people that posted to
    the group for a total of 1,440 posts.  From the first line of the
    histogram you can determine that 164 people posted less than 15 times in
    4 years, for a total of 459 posts.  The last line of the histogram shows
    that one person posted 151 times.
    
    Here is a list of the top posters and how many times they posted from July
    of 1997 to July of 2001:
    
    151     Dan Hogan
    97      Dan Allen
    86      Rick Emerson
    57      Russell Sher
    50      George Huxtable
    44      Tony Severdia
    43      Gordon Talge
    39      Bill Murdoch
    37      Paul Hirose
    36      Rodney Myrvaagnes
    34      Peter Smith
    32      Chuck Taylor
    27      Yves Arrouye
    26      Lu Abel
    26      Aubrey O'Callaghan
    23      Millard Kirk
    19      Steven Wepster
    19      Nigel Gardner
    18      Roger M. Derby
    18      Michael Wescott
    18      Joe Shields
    18      Ed Falk
    17      Mal Misuraca
    16      Andres Ruiz
    15      Jim Manzari
    15      Dr. Geoffrey Kolbe
    13      Herbert Prinz
    13      Clive Sutherland
    12      Geoff Kuenning
    12      Barrie Hudson
    11      Richard Langley
    11      Henning Umland
    11      Carl Herzog
    10      William Trayfors
    10      Thomas Schmidt
    10      Sam Chan
    10      R.H. van Gent
    9       Pierre Boucher
    9       Craig
    8       John Simmonds
    
    My Awk script actually handled the fact that many of the posters of this
    list have had different signatures (email addresses, spellings of names,
    with or without middle initials, order of names, etc.) and has folded
    everyone many identities into a single canonical identity based on what
    they posted as the most frequently.
    
    
    REFLECTION
    ==========
    This fine collection of acquaintances seems now like longtime friends!
    I have found myself starting to talk to others about my friend George
    Huxtable who knows the history of English navigation like the back of his
    hand, of Chuck Taylor who enjoys HP calculators like I do, of Aubrey
    O'Callaghan who enjoys O'Brian, of Dan Hogan the Silicon Sea man,
    of Richard Emerson our pragmatist who always brings our theory back
    to practice, of Russell Sher who someday if I ever get to South Africa
    I would like to meet, of Peter Smith who I have learned a lot of theory
    from... and to many others who have all been posting for these 4 years.
    
    I am impressed with the amount of knowledge that we collectively have shared
    in this forum.  I would bet that we account for more than 50% of the
    people of the world that are seriously interested in celestial navigation,
    perhaps more!
    
    
    PROPOSAL
    ========
    Maybe we should consider trying to sometime meet for a day someplace to
    actually meet and get acquainted in person.  It would be especially nice to
    pick someplace that is central to navigation.  Next year is the 200th
    anniversary of Nathaniel Bowditch's first edition of "The American Practical
    Navigator" and Bowditch was born at Salem, Massachusets.  Perhaps we should
    gather there?  Or not.  Is there any interest in doing this?
    
    
    REQUEST
    =======
    To better determine a central meeting location, could you email me your city
    or lat/lon and then I'd like to find a center point where we could meet.  I
    know of several of the list in Europe and Russell in Africa, but I think
    most of us are in the US.  My rough guess is that a center would be
    somewhere in the Eastern US.
    
    Thanks!
    
    Dan
    
    
    Daniel K. Allen
    danallen{at}nwlink.com
    http://www.nwlink.com/~danallen/
    Measure | Analyze | Communicate
    

       
    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