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|Definitionskos:definition||In 2017 the OGC began a focused effort to develop Application Programming Interface (API) standards that support the Resource Oriented Architecture and make use of the OpenAPI specification. As part of this effort, this OGC Testbed 15 Engineering Report (ER) defines a proof-of-concept of an API specification for maps and tiles.The OGC API Maps and Tiles draft specification described in this ER builds on the precedent of the OGC API - Features - Part 1: Core standard. The OGC API - Tiles draft specification describes a service that retrieves data representations as tiles, which are generally small compared with the geographic extent of the data. In the draft specification, the assumption is that tiles are organized into Tile Matrix Sets consisting of regular tile matrices available at different scales or resolutions. The OGC API Tiles draft specification is described as a building block that can be plugged into an OGC API - Features service to retrieve tiled feature data (sometimes called vector tiles) or to an OGC API Maps implementation to retrieve rendered tiles (sometimes called map tiles). In the future, the OGC API - Tiles draft specification could extend other specifications, one possible candidate being the emerging OGC API Coverages draft specification.The OGC API - Maps draft specification describes an API that presents data as maps by applying a style. These maps can be retrieved in a tiled structure (if OGC API - Tiles is approved as an OGC Implementation Standard) or as maps of any size generated on-the-fly. The OGC API - Maps draft specification implements some functionality, specified in the Web Map Tile Service (WMTS) 1.0 standard, related to the use of styles by using the Styles API draft specification that was developed in the Testbed-15 Open Portrayal Framework thread.The draft Maps and Tiles API specifications are designed in a modular way. With the exception of the core requirements, the other conformance classes describe functionality that can be considered optional characteristics that can be combined by server implementations at will.At the beginning of Testbed-15, the original proposed title for this ER was OGC Testbed-15: Web Map Tiling Service Draft Specification Engineering Report but in the course of the Testbed-15 that title was changed to better represent the content.|
|Creatorcreator||Joan Maso Pau|
|OGC document typedoctype||Public Engineering Report|