http://proceedings.esri.com/library/userconf/proc00/professional/papers/pap691/p691.htm
A Digital Line Graph (DLG) uses vector data, meaning the geographic information is coded in points, lines (arcs), and polygons (areas). DLGs can convey a multitude of information because of its ambiguity. This map is a DLG of roads. You can clearly see the intersections from this DLG.
A Digital Line Graph (DLG) uses vector data, meaning the geographic information is coded in points, lines (arcs), and polygons (areas). DLGs can convey a multitude of information because of its ambiguity. This map is a DLG of roads. You can clearly see the intersections from this DLG.
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