Below are brief descriptions of all the functions available in SGS Prime COGO. The software is available at a Lite or Standard license level. A Professional license level with additional features is planned for a future release.
COGO Menu 

Point Traverse 2D 
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Std 
Pro 
Basic  Calculate points by direction, distance and offset. 
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Basic with Backsight  Calculate points by turned angle from backsight, distance and offset. 
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Standard  The default version, a complete COGO solution with Inverse and Intersection calculation capabilities. 
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Inverse Calculations 
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Std 
Pro 
Inverse Points  Find the direction, horizontal and slope distances, slope and coordinate differences between two points. Calculation methods include Point to Point, Radial Ties (to calculate inverses to multiple points from a base point), and Point Chain (to calculate inverses of sequential courses). The Point to Point option allows the user to calculate coordinates of any station and offset between the two points, calculate multiple points by distance interval and offset, or by equal partition and offset.

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Inverse Curve (Radial Point)  Find all the curve elements by entering points at the beginning and end of the curve, the radius point and the direction of the curve. Calculate coordinates of any station and offset along the curve, calculate multiple points by distance interval and offset, or by equal partition and offset.

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Inverse Curve (Three Point)  Find all the curve elements by entering points at the beginning and end of the curve, and a third point on the curve. Calculate coordinates of any station and offset along the curve, calculate multiple points by distance interval and offset, or by equal partition and offset.

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Inverse Angle  Calculate the turned angle at a station by entering the station, backsight and foresight points. Distances to both backsight and foresight are also calculated.

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Inverse Point to Line  Enter 2 points along a baseline and a offset point to calculate the offset distance perpendicular to the line, the distances along the baseline that the offset point is perpendicular.

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Inverse Point to Curve  Enter beginning of curve and end of curve points, a radius point and a offset point to calculate the offset distance perpendicular to the curve, the distances along the curve that the offset point is perpendicular.

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Intersections 
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Std 
Pro 
BearingBearing  Intersect directions from two known points. Perpendicular offsets can be entered for both directions. 
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DistanceDistance  Intersect distances from two known points. 
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BearingDistance  Intersect a direction from a known point, with a distance to another known point. A perpendicular offset can be entered for the direction. 
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DistanceInterior Angle  Intersect a distance from a known point with an angle to another known point. 
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Areas / Closures 
Lt 
Std 
Pro 
Area by Points  Calculate the area of a polygon by entering the points along the perimeter. Curved and straight segments can be entered. The polygon is drawn on the screen, and can be exported as a DXF file.

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Subdivide by Sliding Bearing  Subdivide a specified area by sliding a line of fixed bearing. Solution points can be stored, and the calculated polygon can be exported as a DXF file.

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Subdivide by Hinge Point  Subdivide a specified area by swinging a line from a hinge point into another line of fixed bearing. Solution points can be stored, and the calculated polygon can be exported as a DXF file.

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Closures  Calculate closures by entering dimensions of straight and curved segments. The report includes the precision, length, area and misclose information. Results can be exported to a text file, a HTML report, a DXF file, or points stored in the project database.

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Fit Points 
Lt 
Std 
Pro 
Fit to Straight Line  Calculate the least squares line that best fits a series of points (linear regression). The direction (azimuth/bearing) of the line and its standard deviation, the YIntercept and its standard deviation, and correlation are calculated. Perpendicular offsets can be viewed for each point and the points can be shifted to fall on the line.

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Fit to Circular Curve  Calculate the radius and the coordinates of the radius point of the least squares circle that best fits a series of points. When providing points along one or both tangents, the program will also solve the BC and/or EC point coordinates. It is possible to enter a radius for the curve that differs from the bestfit radius and recalculate a new least squares circle with the fixed parameter. Radial offsets can be viewed for each point, and the points can be shifted to fall on the curve.

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Double Proportion  Enter the 4 points for the North, East, South and West section corners and the record measurements to the lost section corner to calculate the coordinates as per the Double Proportionate Measurement method (BLM).

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Irregular Boundary  A combination of single proportion and compass rule is used to reestablish a lost corner as per the Irregular Boundary Adjustment method (BLM).

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Grant Boundary  Calculate the positions of lost angle points as per the Grant Boundary Adjustment method (BLM).

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Adjust Menu 

Compass Rule 
Lt 
Std 
Pro 
Closed Figure  Perform a compass rule adjustment on a series of points in a closed loop. The precision, perimeter and misclose information is calculated. Review pre and postadjustment course dimensions and optionally adjust the point coordinates. 
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Close to Fixed point  Perform a compass rule adjustment on a series of points closing on a fixed point. The precision, length and misclose information is calculated. Review pre and postadjustment course dimensions and optionally adjust the point coordinates. 
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Rotate / Mirror 
Lt 
Std 
Pro 
Rotate around Base Point  Rotate a series of points around a specified base point by a entered or calculated angle.

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Rotate around Origin (0,0)  Rotate a series of points around a 0,0 by a entered or calculated angle.

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Mirror along Baseline  Mirror a series of points along a baseline as defined by two points.

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Shift / Average 
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Std 
Pro 
Shift by ΔX/ΔY/ΔZ  Shift a series of points by entering northing/easting/elevation shift values.

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Shift by Distance and Direction  Shift a series of points by entering distance and direction shift values.

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Shift by From/To Points  Shift a series of points by entering two points to shift from/to.

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Average Points  Compute the average coordinate values of a series of points. The standard deviations of the averaged coordinates, and the coordinate ranges are calculated.

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Scale Points 
Lt 
Std 
Pro 
Scale from Base Point Scale a series of points from a base point by specified horizontal and vertical scale factors. 
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Scale from Origin (0,0,0) Scale a series of points from 0,0,0 by specified horizontal and vertical scale factors. 
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Transform Coordinates 
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Std 
Pro 
Helmert Transformation  Transform a series of points from one coordinate system to another by matching up control points in both systems. Points may be matched up 1D, 2D or 3D and the scale factor may be fixed at 1. The least squares solution computes the origin shift of the transformation, rotation and scale factor parameters, the standard deviation in the northing/easting, the elevation shift and the residuals for each control pair. 
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3D to Plan Cross Section  Transform 3D point coordinates to 2D cross section points along a cut line as defined by two points. 
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Tools Menu 

Triangle Solver 
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Std 
Pro 
Plane Triangle Solver  Solve the remaining parts, area and perimeter of any plane triangle when providing 3 known parts. 
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Horizontal Curves 
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Std 
Pro 
Circular Curve Solver  The circular curve solver solves all the curve parameters when two parameters are provided, with one known parameter being either the radius or deflection angle, or provide the arc length and chord length to solve using Newton's method.

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Spiral Curve Solver  The spiral curve solver solves all the parameters of a spiralcurvespiral (equal spiral) transition curve when the spiral length, total SCS deflection angle and curve radius are provided.

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Vertical Curves 
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Std 
Pro 
Vertical Curve Solver  Solve a vertical curve by entering grades or elevations. Fixed point vertical curves and slope intersections are also included.
 Solve the elevation at any station on the vertical curve.
 Solve the station(s) at a given elevation.
 Solve the elevations for all stations at a given interval.

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RPN Calculator 
Lt 
Std 
Pro 
RPN Calculator  RPN Calculator designed for survey calculations. Common distance/angle/area/volume unit support is included for direct calculations without the need to convert values prior to calculations.

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Configure Settings 
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Std 
Pro 
User Settings  Angle and Distance Units, Coordinates, Stations and Grades formats, Input and Output Scale Factors, general Program options, and DXF export layer settings can be configured to the user's preferene. 
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Points Menu 

Store and Edit Points 
Lt 
Std 
Pro 
Store and Edit Points  Store and edit point coordinates in the current project database. 
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Delete Points 
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Std 
Pro 
Delete Points  Delete points from the current project database. 
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Renumber Points 
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Std 
Pro 
By Starting Number  Enter a Start ID and a range of points to renumber.

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By Additive Number  Enter a additive number and a range of points to renumber.

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Plot Points 
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Std 
Pro 
Plot Points  Graphically display a range of points on the screen. Touch and keyboard navigation (pan/zoom) is possible. 
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Import / Export 
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Std 
Pro 
Import ASCII Points  Import comma, space or tab delimited ASCII files.

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Export ASCII Points  Export comma, space or tab delimited ASCII files, and choose the number of decimals.

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Export DXF Points  Export DXF files of points in the project database to open directly in a CAD program.

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Advanced Menu 

Advanced Features 
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Std 
Pro 
The features in the Advanced Menu are currently in the Planning Phase and will be available only for the Professional license level in the future.

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