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CoGo
CoGo
Inverse
CoGo Inverse -
Ground distance is displayed, tap the
D
button to cycle through the other distance type
Inverse calculates the bearing (
B
) and distance (
D
) of a line
between two known points (
P
1
&
P
2
).
The
(multi-select) button can be used as a quicker
method to select both
P
1
&
P
2
from the point’s list.
Multi-Select
Screen - Selecting Points 103 and 104
P
1
&
P
2
can also be entered directly from the keyboard by
typing in the point names. To use this option, long click the
P
1
&
P
2
boxes (notice the small arrows in the bottom left
corner of these boxes).
Press
to switch the coordinates of
P
1
&
P
2
. Clicking on
the right side of output boxes such as
B
, Grid copies the
value of the box into the selected clipboard box.
Resection
CoGo Resection
CoGo Resection
is found in the
CoGo Intersections
menu and
can be used to accurately locate an object that is difficult or
impossible to survey directly by surveying 3 points around
that object and measuring the 3 corresponding offset
distances to it.
In the example shown above, an iron pin at the base of a
tree was located by surveying 3 points around the tree. The
offset distances of 9.92, 4.29 and 2.39 feet were measure
with a tape measure. The small residuals indicate a good
solution (R1, R2 & R3 are all less than 0.03’).
