Web Map Service (WMS) Layers
It’s now possible to load geospatial map images onto the map by using a WMS service. Some knowledge maybe required if this is something that is of interest.
These type of map images are like the ones which come from this site, and they’re designed to show all sorts of data.
The demo page has a red button just above the map, labelled “WMS” and when clicked will load the various layers provided in an example service that outlines various soil types around the UK.
Every web map service has standard endpoints which the plugin utilises. It doesn’t use all of them right now, but the ones it does use are: getMap, getFeatureInfo and GetLegendGraphic.
Here are the details…
A What3Words (map) - WMS layer has loaded
Fires when a WMS geospatial map image has been loaded onto the map.
A What3Words (map) - WMS layer item has been clicked
Fires when an item within a WMS layer has been clicked.
Load WMS layers
This action allows you to use a web map service (WMS) for requesting a geospatial map image. It utilises the contained methods of that service to return the data needed. You may specify the options below, not all are available at this time. This uses the EPSG:3857 spatial reference system which isn’t configurable just yet.
This is the URL for the WMS provider which should end with a question mark.
Specify any layers that you wish to show on the map. You can use one or more layers here, although multiple entries should be separated with a comma and not include any spaces.
This is the version for which the WMS service supports. Most services will support either 1.0.0, 1.1.0, 1.1.1, 1.3.0. Leave this at 1.3.0 if unsure.
Styles in which layers are to be rendered. You can use one or more styles here, although multiple entries should be separated with a comma and not include any spaces.
Format for the map output.
Remove WMS layers
Allows you to remove all WMS layers from the map. It has no options.
WMS layer information
Contains any information relating to a clicked item that shows on a WMS layer.
Contains a legend image when loading WMS layers. This image will update itself every time the map is moved or zoomed. The legend reflects what is being shown at the time so if you’re zoomed out showing a lot of data, expect this legend to have a lot of information within it. If you’re zoomed in showing only a few areas, then it should be relatively small.
For anyone needing some additional info on what WMS is all about then this link is quite informative.
WMS - Overview — OGC e-Learning 2.0.0 documentation (opengeospatial.github.io)