Coordinate geometry (COGO) is a method of inputting surveying or engineering data into GIS databases. The data typically consist of coordinates of points, distances and bearings between points, arcs and curves, point identifiers, and additional descriptions.
The first step is capturing the COGO information in a structured manner, and the GeoExt COGO GUI item will be required for that.
Once the COGO traverses are captured, they can be turned into standard GIS lines or polygons, and then validated. This work item will convert COGO traverses into OpenLayesr line or (optionally) polygon objects. The objects can then be used as map overlays or sent back to the server, using existing OpenLayers facilities.
Funding
This roadmap item is currently unfunded.
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Other Roadmap Items
Polygon collections are very often generated as sets of shapes that share boundaries. Rather than digitizing new polygons and using snapping to create a duplicate bounding, a “build polygon” tool allows users to add new polygons on to the sides of existing polygons.
Creating new geometry from COGO directions is a common use case for web editing tools in county and municipal jurisdictions. This work item will take in COGO directions and return a feature suitable for rendering on the map, sending back to the server, etc.
Shared Polygon Boundary Edit Tool
Polygon collections that form a “coverage” are a common form of GIS data. This tool will allow users to edit the locations of boundaries that are shared by two or more polygons.