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Switching basemaps

Visualise your data in different contexts​

The active basemap is applied throughout Alloy, including the main map area, the Geometry Editor, and in map pickers (except for Map controls in custom reports).

To switch to another basemap, select Basemaps in the right panel menu, and then toggle the relevant switch.

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Note

In Alloy, all geometry is saved using the WGS84 Lat/Lng (EPSG:4326) coordinate system.

If the active basemap uses another coordinate system, item geometry is transformed on the fly (by Alloy or the map server) to keep things in proportion. Occasionally, this can result in the geometry appearing slightly misaligned with the basemap.

Therefore, we recommend switching to the most relevant basemap before editing item geometry, so you can draw directly over the basemap's features if necessary.