API Reference | OSGeo FDO Provider for WMS |
00001 /*! \mainpage Introduction 00002 <div class="mainpage"> 00003 <!-- This is the index.html page that the user first sees. --> 00004 00005 <p>The Feature Data Objects (FDO) API provides access to data in a 00006 data store. A provider is a specific implementation of the FDO API 00007 that provides access to data in a particular data store. The FDO 00008 Provider for WMS provides FDO with access to a WMS-based data store. 00009 </p> 00010 <p>An Open Geospatial Consortium (OGC) Web Map Service (WMS) 00011 produces maps of spatially referenced data dynamically from 00012 geographic information. This international standard defines a 00013 "map" to be a portrayal of geographic information as a 00014 digital image file suitable for display on a computer screen. 00015 A map is not the data itself. Maps by WMS are generally 00016 rendered in a pictorial format, such as PNG, GIF or JPEG, or 00017 occasionally as vector-based graphical elements in Scalable 00018 Vector Graphics (SVG) or Web Computer Graphics Metafile 00019 (WebCGM) formats. 00020 00021 <p>The FDO Provider for WMS has the following characteristics: 00022 </p> 00023 <ul> 00024 <li> The FDO Provider for WMS serves up map information originating 00025 from an OGC Basic Web Map Service that provides pictorially formatted 00026 images, such as PNG, GIF, or JPEG. 00027 <li> WMS map data is exposed through an FDO feature schema whose classes 00028 contain an FDO Raster property definition. The FDO schema exposed from 00029 the FDO Provider for WMS conforms to a pre-defined FDO schema that is 00030 specific to WMS and that acts as the basis for all FDO interaction with 00031 WMS data, regardless of the originating source of the WMS images. 00032 <li> WMS data manipulation operations are limited to querying features 00033 based on spatial and non-spatial constraints. Schema manipulation 00034 operations are not supported. 00035 </ul> 00036 <p>The FDO Provider for WMS can run in a multi-platform environment, 00037 including Windows and Linux. 00038 </p> 00039 <p> 00040 For more information, see <i>The Essential FDO</i> (FET_TheEssentialFDO.pdf) 00041 and the <i>FDO Developer's Guide</i> (FDG_FDODevGuide.pdf). 00042 </p> 00043 00044 <br> 00045 </div> 00046 */ 00047 00048 00049 00050
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