from-nodeOf an arc's two endpoints, the one first digitized. functional surfaceA surface representation which stores a single z value (as opposed to multiple z values) for any given x,y location. TIN represents data as functional surfaces.
from-node Of an arc's two endpoints, the first one digitized. From- and to-nodes give an arc left and right sides and, therefore, direction. FTP ...
See Also: from-node [data capture] Of an arc's two endpoints, the last one digitized. From- and to-nodes give an arc left and right sides and, therefore, direction.
Arc/node topology is a data structure which makes use of arcs (the polygons to the left and right of an arc) and the nodes (the from-nodes and to-nodes of an arc) to define the relationships between neighboring polygons and connecting line features.
See also from-node. topographic map 1. A map containing contours indicating lines of equal surface elevation (relief), often referred to as topo maps. 2. Often used to refer to a map sheet published by the U.S. Geological Survey in the 7.
See also: Digitize, Node, To-Node, Arc, Coordinate
 
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