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WMS in Metamod


WMS Client

OpenLayers - JavaScript client for web. Uses extended WMC support library developed by

WMS Server

NcWMS - integrated with THREDDS. Cannot render shapes, only grids.

MapServer - used on for displaying coastlines

METAMOD WMC generator

Perl proxy/web service. Merges GetCapabilities and WMSsetup file using XSLT. Also works as proxy to get around security limitations in JavaScript.

Protocols and formats


The OpenGIS® Web Map Service Interface Standard (WMS) provides a simple HTTP interface for requesting geo-registered map images from one or more distributed geospatial databases. A WMS request defines the geographic layer(s) and area of interest to be processed. The response to the request is one or more geo-registered map images (returned as JPEG, PNG, etc) that can be displayed in a browser application.

WMS example


XML document describing all available layers and styles in a single data file. Lacks projection and bounding box info.

Example Capabilities document

Web Map Context

XML document specifying desired presentation in client. Can merge layers from different sources, with only desired layers and corresponding styles.

Example WMC document

metamod/wms.txt · Last modified: 2010-06-18 11:24:55 by geira