Overlays

Table of Contents

• Viewing overlays
• GB overlays
  • British National Grid lines
  • British postcodes
  • Colouring in
• World Climate
  • Temperature
  • Precipitation
• World Human Geography
  • World Place Names
  • Population Density
  • World Timezones
• World Physical Geography
  • WWF World Biomes
  • Mountain Ranges
  • Volcanoes
  • Tectonic Plates and Plate Boundaries
• Reference Grids
  • Major lines of latitude
  • Latitude/Longitude Grid

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The Overlays menu in the sidebar allows you to view additional geographic information on your map.

Viewing overlays

• Open the Overlays menu in the sidebar.
• Check the box next to any overlay you wish to view.
  • NOTE: You can view more than one overlay at the same time.
  • NOTE: If the overlay checkbox is greyed out, you need to zoom in/out to view the overlay.
• The overlay is displayed in the map window.
• Adjust the transparency of the overlay by moving the transparency slider (highlighted in image below) left and right.

GB overlays

Only available over Great Britain.

British National Grid lines

British postcodes

Our postcodes data becomes progressively more detailed as you zoom in.

Colouring in

Only available at more detailed scales where OS MasterMap® data is displayed. A blank map that can be used to colour in/create your own map key.

World Climate

Temperature

• Historical and projected temperature information is available.
• Details of the data can be found in our guide.

Precipitation

• Historical and projected precipitation information is available.
• Details of the data can be found in our guide.

World Human Geography

World Place Names

This overlay is helpful in locations where the map displays place names in non-Roman characters, such as Asia.

Population Density

• Visualise population per square kilometre.
• Details of the data can be found in our guide.

World Timezones

All timezones are based on the Time Zone database and show offset from Coordinated Universal Time (UTC) - more information.

World Physical Geography

There are five overlays available, including biomes, volcanoes, mountain ranges and tectonic plates.

WWF World Biomes

• View the major ecosystems of the world.
• Use the Get Feature Information tool to identify regions, shown in the image below.
  
• Details of the data can be found in our guide.

Mountain Ranges

• Labelled polygons indicate mountain ranges.
• NOTE: some labels may not be visible at every scale - you may need to zoom in/out to see labels for some ranges.
• Details of the data can be found in our guide.

Volcanoes

• View volcanoes from the Volcanoes of the World database.
• Use the Get Feature Information tool to identify details of volcanoes, shown in the image below.

• Details of the data can be found in our guide.

Tectonic Plates and Plate Boundaries

• View tectonic plates (with names), plate boundaries or both.
• Details of the data can be found in our guide.

Reference Grids

Major lines of latitude

Latitude/Longitude Grid