Map GPS Coordinates - GPS Map Coordinates ... - Global Mapper

Global Mapper User's Manual
On the Setup Volume Calculate Parameters you can select whether to measure cut-and-fill volumes within
some specified distance of the selected line or within the specified area. If you are measuring along a line, you
can specify the cut heights to use at each vertex individually or use the same cut (base) height for each vertex
relative either to the ground at each vertex or relative to sea level. Whichever option you choose, the heights
will be interpolated between line vertices to get a smoothly varying cut height. If measuring within an area,
there is also an option to perform multiple cut-and-fill calculations between a range of cut (base) height
values. If you choose this option the results will be displayed in a table at the end of the operation so you can
see the results of each calculation.
Once you have your volume calculation setup and you press ok to calculate it, the volume of earth that would
be needed to fill any space below the cut surface (fill volume) is reported along with the volume of earth that
is above the cut surface (cut volume). After viewing the reported volumes, you have the option to save a new
feature with the measurement values.
If measuring the cut-and-fill volumes within an area feature, you can also check the Find Area Cut Height
Where Cut and Fill Volumes are Equal to find the approximate cut height where the same amount of dirt
would have to be cut out as filled. This is useful for selecting a cut height at which no dirt needs to be hauled
off or brought in. The optimal cut height will be reported as the break-even height with the other measurement
results.
On the right-click menu in the Measure Tool are options to control how distances are measured and the paths
are drawn. The following options are available:
• Great Circle - Any measured distances will use the great circle distance, which is the shortest path
along the surface of the earth's ellipsoid between the two points. Any drawn paths will be along the
great circle path. Typically you won't notice a difference for short distances, but will for longer ones.
• Grid Distance - Any measured distances will use the distance as calculated in the Cartesion XY
Map GPS Coordinates - GPS Map Coordinates - GPSCoordinates Map 161