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Geospatial metadata (also geographic metadata, or simply metadata when used in a geographic context) is a type of metadata that is applicable to objects that have an explicit or implicit geographic extent, in other words, are associated with some position on the surface of the Globe. Such objects may be stored in a geographic information system (GIS) or may simply be documents, datasets, images or other objects, services, or related items that exist in some other native environment but whose features may be appropriate to describe in a (geographic) metadata catalogue (may also be known as a data directory, data inventory, etc.). ==Definition== ISO 19115 "Geographic Information - Metadata"〔ISO 19115 Geographic Information - Metadata. International Organization for Standardization (ISO), Geneva, 2003〕 from ISO/TC 211, the current "best practice" standard for geospatial metadata, does not in fact provide a definition of Geospatial (or geographic) metadata(metadata); however, uses the following wording in its "scope" section: "''This International Standard provides information about the identification, the extent, the quality, the spatial and temporal schema, spatial reference, and distribution of digital geographic data.''" A little further, it is stated: "''Though this International Standard is applicable to digital data, its principles can be extended to many other forms of geographic data such as maps, charts, and textual documents as well as non-geographic data.''" The U.S. FGDC (Federal Geographic Data Committee) describes (geospatial) metadata as follows: "''A metadata record is a file of information, usually presented as an XML document, which captures the basic characteristics of a data or information resource. It represents the who, what, when, where, why and how of the resource. Geospatial metadata are used to document geographic digital resources such as Geographic Information System (GIS) files, geospatial databases, and earth imagery. A geospatial metadata record includes core library catalog elements such as Title, Abstract, and Publication Data; geographic elements such as Geographic Extent and Projection Information; and database elements such as Attribute Label Definitions and Attribute Domain Values.''"〔("Geospatial Metadata" on FGDC website, visited 16 October 2006 )〕 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「Geospatial metadata」の詳細全文を読む スポンサード リンク
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