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Edit a basemap

Change the properties of a basemap​

You can edit any custom basemap added by your organisation. If the Context of a basemap is not Customer, it's a protected system basemap, though you can still edit its Name and Colour!

To edit a basemap:

  1. Select Basemaps in the sidebar and then select the basemap.

  2. Select Edit in the relevant section and make your changes.

  3. Select Save to finish or to cancel.

The General section of a custom basemap

General​

This section displays properties common to all basemaps:

  • Name * - enter a distinct name that clearly identifies the basemap.

  • Colour - use the colour picker to set the initial colour of the map area while the map is being drawn (white by default).

  • Watermark - enter text to be superimposed in the bottom-right corner of the basemap. To comply with the map service's licensing, it may be necessary to credit the provider here.
  • API key - if the map service requires an API key, enter it here.

Settings​

The section displays different properties depending on the basemap type:

WMS basemap

  • URL * - update the URL of the map service. This will clear all selected WMS layers.

  • WMS layers * - select one or more data layers provided by the map service. They will be displayed together. For each selected layer, choose its layer style (if any are available).

  • Coordinate system - choose one from the list offered by the map service. If left blank, EPSG:4326 will be used, which is the WGS84 Lat/Lng system used internally throughout Alloy (view on epsg.io).
  • Image WMS - if enabled, Alloy will request the map service to send the entire map as a single image.
WMTS basemap

  • URL * - update the URL of the map service. This will clear the selected WMTS layer.

  • WMTS layers * - choose one of the data layers provided by the map service.

  • WMTS style * - choose the style of the chosen layer.

  • Coordinate system - choose one from the list offered by the map service. If left blank, EPSG:4326 will be used, which is the WGS84 Lat/Lng system used internally throughout Alloy (view on epsg.io).
  • High DPI tiles - if enabled, Alloy will request the map service to send high resolution tiles (512 x 512) if available, instead of standard resolution (256 x 256).
XYZ basemap
  • URL * - update the URL of the map service.
  • High DPI tiles - if enabled, Alloy will request the map service to send high resolution tiles (512 x 512) if available, instead of standard resolution (256 x 256).