Results 1 to 8 of 8

Thread: Question for cartographers - bearing

  1. #1
    Join Date
    Nov 2007
    Location
    Hot Springs, VA
    Posts
    763

    Question Question for cartographers - bearing

    I am trying to place my plat on Google Earth map. On map I have, direction from one mark to another has bearing, for example S 59*56'19" E.
    In Google Earth bearing just a simple - 45*. I understand it is clockwise angle from the pointing north.
    But I can't find how to transfer my bearing to simple angle?
    Thank you,
    Ed.

  2. #2
    Join Date
    Jul 2013
    Location
    Bakerton WV
    Posts
    259
    It seems like your Google resolution is 45 degrees or only eight points on the compass. Your plat is deg-min-sec a very high order of resolution, You are also thinking in terms of azimuth bearing in a 360 degree scale. The surveyors plat is in a quadrant scale. So you will need to know your working resolution and type of scale. 59 56' 19" rounds to 60 degrees but you will need to understand the orientation of the quadrant scale. The North - South axis is 0 degrees no matter whether you face north or south. So imagine you are facing south exactly and turn to the east 59 56' 19" or 60 degrees a convenient resolution.

  3. #3
    Join Date
    Nov 2007
    Location
    Hot Springs, VA
    Posts
    763
    Thank you, Roger. I will investigate more.
    Ed.

  4. #4
    Join Date
    Feb 2003
    Location
    McKean, PA
    Posts
    15,637
    Blog Entries
    1
    Here is a quick tutorial on reading your plat.
    Lee Schierer
    USNA '71
    Go Navy!

    My advice, comments and suggestions are free, but it costs money to run the site. If you found something of value here please give a little something back by becoming a contributor! Please Contribute

  5. #5


    Roger gives the right way to read the bearings. Easier to draw in SketchUp and make a file that can be opened in GE.

    SketchUp takes care of the north direction when you add the location.
    Last edited by Dave Richards; 07-29-2018 at 1:30 PM.

  6. #6
    Join Date
    Sep 2016
    Location
    Modesto, CA, USA
    Posts
    9,979
    Note that magnetic north varies with location and it drifts with time(decades).
    Bill D.

  7. #7
    This link may help you with conversion. https://www.gps-coordinates.net/
    I read recipes the same way I read science fiction. I get to the end and I think, "Well, that’s not going to happen."

  8. #8
    Join Date
    Nov 2007
    Location
    Hot Springs, VA
    Posts
    763
    Guys,

    Thank you very much for the help, especially Dave for converting my bearing info to usable map file. You are magician with Sketchup.
    Mike , I will check links, thanks.
    Lee, thanks for tutorial.

    Ed.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •