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Coordinates are only needed for drawing the path after it is calculated. , x,y) coordinate-based data structure commonly used to represent geographic features. Each feature is represented as one or more vertices. Attributes are associated with the feature. Other data structures include raster (which associates attributes with a grid cell) and triangulated irregular networks (TINs) for surface representation. vertex One of a set of ordered x,y coordinates that constitutes a line. March 1998 28 For more than 25 years ESRI has been helping people manage and analyze geographic information.

MultiPoint A single feature composed of a cluster of point locations and a single attribute record. The group of points represents the geographic feature. NumPoints The count of the number of x,y vertices contained in a shape. PC ARC/INFO PolyLine ring shapefile PC ARC/INFO is a full-featured GIS for PC compatibles. Like ARC/INFO software, PC ARC/INFO is used by organizations around the world for automating, managing, and analyzing geographic information. Attributes describing geographic features are stored as tabular files in dBASE format.

Little endian byte order Right-to-left byte ordering of an integer word. This byte-ordering method is used on many operating file systems including DEC OSF/1™, DEC OpenVMS™, MS–DOS®, and Windows NT™. MapObjects MapObjects is a collection of embeddable mapping and GIS components including an Active X Control (OCX) and programmable Active X Automation objects. Use MapObjects with a variety of standard Windows development environments to build mapping applications or add mapping components into existing applications.

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ESRI Shapefile Technical Description

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