updated: 21Sep2010
Copan for Windows
Multiple Inverse Calculations
Sometimes you'd like to do several inverse calculations, between one at point (or hub point) and multiple to points.
A list of angles and distances may be useful for staking out (or setting out) designed points.
A table of bearings and distances (or radial ties) may be required on a legal plan.
A display of distances (chainages
or stations) and perpendicular offsets may be useful for checking the alignment and spacing of surveyed points.
Use this specialpurpose coordinate geometry module to calculate sets of
 radial angles (from a reference) and distances,
 radial bearings and distances, or
 distances along and perpendicular offsets from a base line,
from one start point to a set of other points, in a coordfile.
To Multi Inverses
 Calculation  Multiple Inverses...
Note that in all of the Multi Inverse calculations below,

You can choose which To Points to include in the results — All or a Filtered set (see § Point Filters).

If entering a bearing (or azimuth), you may use a bearing expressions (see § Bearing Expressions.

Resulting distances are all horizontal (not sloped).

Optionally, use a Scale Factor or Units Factor, before Calculate, to scale the computed distances.
1. To Calculate Many AngleDistance Pairs
 Click the 1. Angle & Distance Calc Mode, and
optionally choose angle Left for negative, counterclockwise angles to be computed.
 Enter the At Point (or hub point) number.
 Enter the Reference Point number or Reference Bearing.
 Calculate or OK.
2. To Calculate Many BearingDistance Pairs
 Click the 2. Bearing & Distance Calc Mode.
 Enter the At Point (or hub point) number.
 Optionally, use an Azimuth Correction, before Calculate, to adjust the computed bearings.
 Calculate or OK.
3. To Calculate Many DistanceOffset Pairs
 Click the 3. Distance & Offset Calc Mode.
 Enter the At Point (or start point) number.
 Enter the Reference Point number or Reference Bearing.
 Calculate or OK.
updated: 21Sep2010