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通用空间数据模型Geometry & Feature
by Sun
2011.7.19
空间数据模型
几何结构(Geometry) 地理要素(Feature)
诸侯割据
各种GIS引擎• ArcGIS• SuperMap• …
各种数据模型• {"x":1,"y":2}• {"type":"POINT","points":[{"x":1,"y":2}]}
货币流通
AB
CX
秦灭六国
Geometry• WKT
Feature• geometry:String• attributes:Object
统一货币
WktDialectWKT <-> Geometry JSON• getGeometryJson(String):String• toWkt(String):String
FeatureDialectFeature <-> Feature JSON• getFeatureJson(Feature):String• toFeature(String):Feature
圆形方孔钱
读/写WKT <-> 坐标数组WKT <-> 坐标数组• POINT <-> [x,y]• LINESTRING <-> [ [[x1,y1],[x2,y2]...] ]• MULTILINESTRING• POLYGON
谢谢!
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