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					This document was exported from Numbers '08. Each table was converted to an Excel worksheet.




Numbers Sheet Name             Numbers Table Name

Bearing-Distance Calculator
                               Bearing-Distance Projected Data
                               Declination
                               "All Drawings from the Sheet"
able was converted to an Excel worksheet.




          Excel Worksheet Name



          Bearing-Distance Calculator - B
          Bearing-Distance Calculator - D
          Bearing-Distance Calculator - 1
 Point to Point   SD (m)          Bearing       Declinated      EV (%)       EV (degrees)    HD (m)      VD (m)
                               (degrees east Bearing (True
                               of mag. north) or Polar North)

1-2                    25.70           134.00         154.00         50.00            4.00       25.64            1.79
AI Angular
 Distance
Conversion

      64.00
Declination   20.00
The LOA Bearing-Distance Calculator for Archaeological Survey
This calculator is presented by the University of British Columbia’s Laboratory of Archaeology and is free for use. Created by Andrew Martindale;
please cite as appropriate.

Survey sketches are usually based on bearing and distance. Some basic calculations are needed to convert these measurements t
profile views. To project a complete data set, you should collect horizontal bearings (angular distance in degrees from North using a compass),
distances (linear distance using a tape or hip chain, in meters), and vertical bearings (using a clinometer, in either degrees or %). See the relevant
sections of this website (forthcoming) for instruction on use of this equipment.

Use this spreadsheet to calculate the relevant projections from your data.
Declination. If you have bearing measures in magnetic north, add a declination using this function. Note: check your declination at
http://geomag.nrcan.gc.ca/apps/mdcal-eng.php. Don’t forget to enter the date as well as the location your data was collected. Enter your declination
value in the field below.
Horizontal bearing (HB) for Adobe Illustrator. The AI bearing origin is cardinal East rather than North and the direction of rotation is west
(counterclockwise). Use this field to convert your cardinal data into bearing data to use the AI MOVE and COPY function to project your points. See
the relevant section of this website for a guide to this procedure.
Horizontal distance (HD). Normally we collect slope distance (SD) and project HD using the vertical bearing (VB) and trigonometr
Elevation (EV). We can calculate the vertical distance between points if we know the slope distance (SD) and the vertical bearing (VB) using
trigonometry.



Declination                 20.00




Point to Point        SD (m)         Bearing     Declinated                EV (%)         EV (degrees)           HD (m)               VD (m)
1-2                         25.70                       (True
                                  (degrees east Bearing154.00
                                         134.00                                   2.00                0.90              25.70                0.40
Enter your point Enter the slope    Enter the bearing This field      Enter you          This field          This field          This field          This field
numbers here.    distance here.     here if you used calculates the   vertical bearing   calculates the      calculates the      calculates the      calculates the
                                    magnetic north. horizontal        here if you used   vertical bearing.   horizontal          vertical distance   angular distance
                                                      bearing. If you                    If you used         distance between    between your        for plotting
                                                      used declinated                    degree              your points. The    points. The         points in Adobe
                                                      measures, just                     measures, just      function converts   function            Illustrator.
                                                      enter them here                    enter them here     the degrees to      converts the
                                                      instead.                           instead.            radians.            degrees to
                                                                                                                                 radians.
Fill in the fields highlighted in yellow. Copy the data row as many times as you need, the functions will copy as well.
          y Andrew Martindale;


easurements to project in plan and
         using a compass),
        r %). See the relevant



        ion at
collected. Enter your declination

          ation is west
           oject your points. See

d trigonometry.
         ring (VB) using




               AI Angular
                Distance
                      64.00
             This field
             calculates the
cal distance angular distance
             for plotting
             points in Adobe
             Illustrator.
py as well.

				
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