Sokkia SRX1, Operator'S Manual, Page: 120 / 184

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20.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
• Surface area is calculated by observing in order the points on a line enclosing an area or by reading
in the previously registered coordinates and using it as known point data.
• It is possible to allocate softkeys in the MLM menu to suit various applications and the ways that
different operators handle the instrument.

"21. CHANGING THE SETTINGS"

• An error will occur if only two points (or less) are entered (or recalled) when specifying an enclosed
area.
• Be sure to observe (or recall) points on an enclosed area in a clockwise or counterclockwise
direction. For example, the area specified by entering (or recalling) 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 (measured/read-in) are used to create the surface of the slope
area. Subsequent points are projected vertically onto this surface and the slope area calculated.
Input Output
Coordinates
:
P1 (N1, E1, Z1)
Surface area
:
S (horizontal area and slope
area)
P2 (N2, E2, Z2)
P3 (N3, E3, Z3)
:
: