MapInfo Spatial Server Web Map Service - Product Documentation ...

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Overview Overview The MapInfo Spatial Server Web Map Service (WMS) allows software clients to reference map images over the Internet or a private intranet. The WMS implementation is based on the WMS 1.1.1 and 1.3.0 OGC specification. Using HTTP requests, the WMS provides georeferenced data to a client that displays this data as an image. Georeferenced data is information associated with maps that describe the real world extents of specific features and the projection upon which it is based. The images can be provided as GIF, JPEG, PNG, and other image formats. Layers and Styles The images rendered can be made of layers that are hierarchical—an image can be served that is made up of a layer that is a collection of other layers. Since WMS renders layers, the characteristics that modify the view of layers, such as styles and coordinate systems, can also be included in the layers provided. This lets you customize images because each image can act as a separate layer within the client that is accessing these images. WMS Servers Aside from the servers provided by Pitney Bowes Software Inc. and any service that you provide through your own organization, there are many public access WMS servers available on the World Wide Web. There are WMS servers for LandSat data, USGS DOQ photos, bathymetry, weather, and many other data types. Pitney Bowes Software Inc. maintains a Web Map Server of many of our data products. To view these products, open the following URI in a WMS client, such as MapInfo Professional: http://www.mapinfo.com/miwms If you are accessing maps from different sources, it is not a complicated task to combine the images into a single coherent image that your users can work with. It is important to keep the spatial information (bounding box, spatial reference system, height, and width) identical. This ensures that the different images align with each other properly. Note: Not all Web Map Servers adhere to the OGC standards and may or may not be compatible with your WMS client. Please refer to the OGC WMS 1.1.1 or 1.3.0 specifications (www.opengeospatial.org/standards/) for more information about developing a WMS client to the WMS 1.1.1 or 1.3.0 specification. Understanding the WMS Server Functionality 6 There are three WMS server-specific methods that provide the basis for the server implementation: • GetCapabilities • GetMap • GetFeatureInfo Each of these methods is discussed below. MapInfo Spatial Server 1.0
Note: A basic Web Map Service classifies its georeferenced information holdings into "layers" and offers a number of predefined "styles" in which to display those layers. How to Get Information About a WMS Server When first finding a Web Map Server, it is necessary to find out the names of available layers, styles in use, spatial information in use, and other information that the server provides, in order to make a request for an image that is within the parameters of the server. The GetCapabilities request retrieves service-level metadata over the Internet or intranet, including the server name, the layer names, abstracts about the data, and valid request parameters, among other data. The following section highlights potential ways to apply this capability: Getting Service-level Metadata About a WMS on page 20. How to Retrieve a Map From a WMS Server GetMap retrieves the geospatial information, over the Internet or an intranet, based on a specific request of the data you want and returns it as a raster image. When invoking GetMap a WMS client can specify: • Layers • Styles • A bounding box (the area to be mapped) • A coordinate reference system (also known as the spatial reference system) • Output image format (JPEG, GIF, PNG. and others). • Output size (height and width of the returned image) • Background transparency and color The following section highlights potential ways to apply this capability: Getting Maps on page 23. How to Use the WMS Server GetFeatureInfo Operations GetFeatureInfo returns request information for a feature at a given point on the map after a GetMap has been called. This is a search-at-point operation in which, after a GetMap request, the GetFeatureInfo request supplies the X, Y pixel coordinates of the location about which you want more information. The following section highlights potential ways to apply this capability: Getting Information About Map Features on page 25. MapInfo Spatial Server Web Map Service Chapter 1: Introduction 7
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Page 5: Introduction This guide provides de
Page 10 and 11: Accessing and Modifying the Configu
Page 12 and 13: Reload the Service Configuration us
Page 14 and 15: Defining a WMSLayer Defining a WMSL
Page 16 and 17: Accessing the Web Map Service From
Page 19 and 20: Web Map Service Capabilities The Ma
Page 21 and 22: OGC:WMS Pitney Bowes Software Inc.
Page 23 and 24: Getting Maps The primary reason to
Page 25 and 26: Getting Information About Map Featu
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Page 29: Layers and Styles The images render

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