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18.SURFACE AREA CALCULATION
You can calculate the area of land (slope area and horizontal area) enclosed by three or more known points on
a line by inputting the coordinates of the points
• Number of specified coordinate points: 3 or more, 30 or less
• It is possible to allocate Operating icons in measurement menus to suit various applications and the ways that
different operators handle the instrument.
"19.12 Allocating Operating Icons"
• An error will occur if only two points (or less) are entered when specifying an enclosed area.
• Be sure to observe points on an enclosed area in a clockwise or counterclockwise direction. For example, the
area specified by entering point numbers 1, 2, 3, 4, 5 or 5, 4, 3, 2, 1 implies the same shape. However, if
points are not entered in numerical order, the surface area will not be calculated correctly.
Slope area
The first three points specified are used to create the surface of the slope area. Subsequent points are
projected vertically onto this surface and the slope area calculated.
PROCEDURE Surface area calculation by measuring points
1. Select "Area calc." in <Menu>
Input
Output
Coordinates:
P1 (N1, E1, Z1)
Surface area:
S (horizontal area and slope area)
...
P5 (N5, E5, Z5)