COGO Functions 
Lt 
Std 
Pro 
Point Traverse
 Standard Mode  A complete COGO solution. This command line style of program handles everything from simple direction and distance point creation to all types of intersections to full inversing of points.
 Sideshot Mode  A scaled down point creation tool. By specifying a starting point and backsight point, points may be calculated by entering an angle right/left, a distance and optional offset. The point can be stored as a Sideshot or Traverse Point.

Yes 
Yes 
Yes 
Inverse
 Inverse Points  Find the direction, horizontal and slope distances, slope and coordinate differences between two points. Easily convert metric <> imperial with a single key press, and calculate coordinates of any station and offset between the two points when you provide the station at either point.
 Inverse Curve  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. Coordinates of any station and offset along the curve can be calculated by providing the station at BC, EC or the PI of the curve.
 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.
 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 offset point is perpendicular. Optionally create a point at the perpendicular intersection.
 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 offset point is perpendicular. Optionally create a point at the perpendicular intersection.
 Inverse Point to Alignment  Choose a defined alignment and then enter point numbers to inverse that point to the design. Station, offset and cut/fill information is displayed. Only available in COGO+ Pro.

Yes 
Yes 
Yes 
Intersections
Bearingbearing, bearingdistance, distancedearing, and distancedistance intersections can be calculated from one input form by specifying the known information. Offsets can be used to create offset intersections, etc. 
Yes 
Yes 
Yes 
Area by Points
 Calculate the area of a polygon by entering the points along the perimeter. Curved and straight segments can be used.
 Plot the area polygon on the screen.
 Export a DXF file of the polygon.
 Calculate predetermined areas by sliding bearing and hinge point methods. Only available in COGO+ Pro.

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

No 
Yes 
Yes 