ESRI ArcGIS Online

Add a new layer

Once you've signed into your ESRI ArcGIS Online account and opened the map viewer. Zoom in to a small area to reduce the number of requests that are initially sent to the API.

• Select Layers > Add > Add layer from URL.

Add an API and set up custom parameters

In the Add Layer dialog:

• URL: Enter the base URL for OS NGD API – Features, excluding the API Key. For example, https://api.os.uk/features/ngd/ofa/v1.

• Type: Select OGC feature layer.

• Select Custom request parameters and enter the following:

  • Parameter: key

  • Value: [Insert your OS API Key here]

• Click Next.

Adding layers to the map

In the Add Layer dialog:

• To add a layer to the map: Select a layer to add to the map and then click Add to map.

The layer will then display in the Layers panel and the data will display on the map:

Features will automatically refresh when you zoom or pan on the map. If you wish to add multiple layers to the same map, repeat steps 2 and 3.