The LINZ Data Service no longer supports Web Map Services (WMS). This change took place on 14 August 2020.
Following customer feedback and low usage, we ceased support for WMS in preference for Web Map Tile Services (WMTS).
Using Web Map Tile Services (WMTS)
If you wish to use map services from the LINZ Data Service you can use our modern map service, Web Map Tile Services or XYZ tile services.
LDS map services are available as a Web Map Tile Service (WMTS) for use in GIS applications, and a XYZ service for web and mobile mapping. These services are well supported by GIS and web mapping software, including QGIS, ArcGIS, OpenLayers and Leaflet.
A key difference between WMS and WMTS is the form of image delivery – WMS delivers uncached maps rendered on the fly, while WMTS delivers pre-rendered cached map tiles. For performance, raster images are divided into smaller tiles (256x256 pixels), then delivered as a seamless image at a variety of pre-defined zoom levels.
Datasets available via WMTS
WMTS is available for all raster datasets on LDS – more datasets than those that have WMS support. This includes all recent aerial imagery, topographic maps, and hydrographic chart images.
We also provide WMTS of LINZ’s land, road and property boundaries through our NZ Parcel Boundaries Wireframe service. This map service provides a dark outline and transparent fill, making it perfect for overlaying on another map service, or using as context in your app.
Grid datasets, including geodetic conversion grids and 3D elevation data (DEM/DSM), are not available via WMTS.
Our WMTS supported datasets are available in a two pre-defined tilesets (projections) – NZTM2000 (EPSG:2193) and WGS84 (EPSG:3857).
An exception exists where NZTM2000 is unsuitable as a tileset option. For example, hydrographic chart images are provided in their source projection only - WGS 84 – as NZTM would distort the image.
More hints and tips
- Some GIS tools can re-project a map tile service on the fly to match the coordinate system is it using, however the image can become degradated.
- Image quality via WMTS should be the same if not better than WMS. If this is not the case, check that your application isn't trying to stretch the tiles, or trying to transform the tiles to another projection
- If your application is unable to use WMTS to produce a static map or image snapshot, consider downloading the image tile from LDS instead
- For more help with using WMTS, see your application’s documentation or your internal GIS or IT support team