Pitney Bowes MapXtreme - Manual (Page 347)

Chapter 19: Web Map Service
Code Example: Requesting a WMS Layer
MapXtreme v7.1 354 Developer Guide
Code Example: Requesting a WMS Layer
To request a WMS layer programmatically with MapXtreme, follow the code example below.
L
MapXtreme’s implementation of WMS limits the size of the returned image to 4000 pixels
each for width and height.
// build the capabilities
ICapabilities capabilities = WmsClientUtilities.GetCapabilities
(url, "1.1.1");
// create the WMS client
WmsClient wmsClient = new WmsClient(capabilities);
wmsClient.AddLayer("WORLD");
wmsClient.Srs = "EPSG:4326";
wmsClient.BGColor = Color.Blue;
wmsClient.MimeType = "image/gif";
// create the table info
TableInfoWms wmsTableInfo= new TableInfoWms
("MyWmsTable", wmsClient);
// create the table
Table wmsTable = Session.Current.Catalog.OpenTable(wmsTableInfo);
// creates a FeatureLayer from the table entry
FeatureLayer featLyr = new FeatureLayer(wmsTable);
WMS and Coordinate Systems
MapXtreme provides support for three CRS authority coordinate systems that can be returned in a
GetCapabilities request.
• CRS:84 - Longitude/latitude WGS 84. This is equivalent to EPSG:4236 in WMS 1.1.1.
• CRS:83 - Longitude/latitude NAD 83. This is equivalent to EPSG:4269 in WMS 1.1.1.
• CRS:27 - Longitude/latitude NAD 27. This is equivalent to EPSG:4267 in WMS 1.1.1.
In addition, the MapXtreme API provides a public method RegisterCRSCode() for you to register
other longitude/latitude projections in the CRS codespace.
Map and Image Bounds
EX_GeographicBoundingBox
The EX_GeographicBoundingBox is a new parameter for WMS 1.3.0 that defines the minimum
bounding rectangle of the layer in decimal degrees. Its purpose is to facilitate geographic searches
without requiring coordinate transformation by the search engine.