Browse WMS layers

Connect to a WMS service and show the available layers and sublayers.

Use case

WMS services often contain many layers and sublayers. Presenting the layers and sublayers in a UI allows you to explore what is available in the service and add individual layers to a map.

How to use the sample

1. Open the sample.
2. Tap “Layer Visibility” to see a hierarchical list of layers and sublayers.
3. Select a layer to enable it for display. If the layer has any children, the children will also be selected.

How it works

1. A WMSService is created and loaded.
2. WMSService has a serviceInfo property, which is a WMSServiceInfo. WMSService has a WMSLayerInfo object for each layer (excluding sublayers) in the layerInfos collection.
3. Models are recursively created for each sublayer.
   • The model has an isVisible property which sets the visibility for the associated sublayer.
4. Once the layer selection has been updated, a WMSLayer with the selected sublayers is created and added to the operational layers of the map.

Relevant API

• WMSLayer
• WMSLayerInfo
• WMSService
• WMSServiceInfo

About the data

This sample shows Weather Radar Base Reflectivity Mosaics produced by the US NOAA National Weather Service. The service provides weather radar data from the NWS & OAR Multi-Radar/Multi-Sensor (MRMS) System.

Tags

catalog, OGC, web map service, WMS