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- W2367937364 abstract "For constructing the topological data structures in GIS, authors bring forward a new fast algorithm for distinguishing the ascription of isolated islands and la bel points. Firstly, outer-polygons are identified and their left apices are g ot by using Area Method. Secondly, by means of Improved Radial Method, radials a re generated to the left from the left apices and the label points. Then the in tersections of radials and arcs are obtained. Lastly, the relationships between the outer-polygons and the label points are got by the characteristic of arcs. The characteristics of arcs are fully used, so we can avoid organizing polygons , processing arcs repeatedly, or distinguishing indirect-contain relationship. Authors also bring forward a solution in the case of retrogression. The applicat ions of this algorithm show that it is an algorithm with high efficiency and str ong practicability." @default.
- W2367937364 created "2016-06-24" @default.
- W2367937364 creator A5026121963 @default.
- W2367937364 date "2005-01-01" @default.
- W2367937364 modified "2023-09-25" @default.
- W2367937364 title "A Fast Algorithm for Distinguishing the Ascription of Islands and Label Points in GIS" @default.
- W2367937364 hasPublicationYear "2005" @default.
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