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GeoJSON〔(The GeoJSON Format Specification )〕 is an open standard format designed for representing simple geographical features, along with their non-spatial attributes, based on JavaScript Object Notation. The features include points (therefore addresses and locations), line strings (therefore streets, highways and boundaries), polygons (countries, provinces, tracts of land), and multi-part collections of these types. GeoJSON features need not represent entities of the physical world only; mobile routing and navigation apps, for example, might describe their service coverage using GeoJSON.〔(iOS Location and Maps Programming Guide )〕 The GeoJSON format differs from other GIS standards in that it was written and is maintained not by a formal standards organization, but by an Internet working group of developers.〔(The GeoJSON Discussion List )〕 A notable offspring of GeoJSON is TopoJSON, an extension of GeoJSON that encodes geospatial topology and that typically provides smaller file sizes. ==History== The GeoJSON format working group and discussion were begun in March 2007〔(March 2007 Archives by thread )〕 and the format specification was finalized in June 2008. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「GeoJSON」の詳細全文を読む スポンサード リンク
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