A step-by-step guide for connecting LDS Web Map Service (WMS) in ArcGIS Desktop.
For more help with ArcGIS you can consult the official ArcGIS support documentation.
Accessing LDS web services
The first step in accessing LDS web services is to create a web services or API key. These keys are codes (such as abcdefgh123456789) unique to each LDS user, and are used to simplify the process of accessing web services.
The following process for accessing LDS Web Map Services in ArcGIS is performed using ArcGIS Desktop10.5.
- Open ArcCatalog, under the Catalog Tree expand GIS Servers and double click on Add WMS Server:
- In the URL field of the Add WMS Server window, enter the WMS URL you copied from the Services tab of your chosen dataset in LDS. For example, the WMS URL for the NZ Topo50 Maps dataset is:https://data.linz.govt.nz/services;key=<your_api_key>/wms/layer-50767?service=WMS&version=1.1.1&request=GetCapabilities
Then click Get Layers:
- Click OK. (There’s no need to enter a username and password as the LINZ Data Service knows you’re a registered user from your API key.) The LINZ Data Service WMS layer will now be available in the Catalog Tree:
- Open ArcMap and add the layer or layers you want to your ArcMap session:
Tip: Defining the map projection
By default, if you do not define a coordinate system for the map, the WMS layer will be unprojected using WGS84. To ensue your map is projected first time around, you may want to set your desired coordinate system (e.g. NZTM2000) before adding any WMS layers to the map.
If the map has no projection defined, complete the following steps.
- To change the projection right click the data frame name and choose Properties
- Select the Coordinate System tab and select New Zealand Transverse Mercator: The map will now be projected in Arcmap according to the NZTM projection: