Free Land Surveying Software Cogo3/18/2021
These descriptions often contain information about line length and direction, and point locations, all relative to the locations of certain key features such as geodetic control points, survey monuments, previously COGOed survey lines, etc.More complex elements can be developed such as alignments or chains which are made up of a combination of points, curves or spirals.An example is a survey plan that diagrammatically shows a road centerline and the edge of the land properties adjoining the road.
The road centerline and parcel boundaries comprise a number of straight and curved lines. A straight line has a direction and distance, while a curved line has a radius, angle, arc length, direction, and so on. These measurements are coordinate geometry (COGO) descriptions. You can use these COGO descriptions to accurately re-create the features the surveyor captured. The survey plan also includes references to existing locations that help you to tie these new features into your GIS database. The reference could be the coordinates for a point or a measurement to a well known location such as a control point, a road intersection, or an existing parcel corner. ![]() It can be downloaded from Professor Johnsons website at Purdue University.
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