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Map Settings: Setting a centre and zoom level for your map

Ally Stuart -

This article is for Citizen Space Geospatial. Please speak to your account manager if you are interested in learning more about it.

What is the zoom and centre point used for?

By setting a centre point and a zoom level for your map you can impact what the map will look like when it first loads for a user.

This means you can focus attention on a specific part of the map, whilst still enabling users to contextualise that location in the wider map area (the valid area).

Setting your zoom and centre point

The default zoom and centre point is set to show the whole tileset's map area. For example, for Ordnance Survey this is Great Britain. 

You can set the zoom and centre point in two ways; by using the map or by using the form controls. As you adjust one, the other will also adjust to reflect those changes. 

To set your centre and zoom on the map:

  1. Search by postcode or drag the map so that the crosshair is on your chosen centre point.
  2. Zoom the map to the desired resolution.
  3. Click the Save Changes button.

To set your centre and zoom on the form:

  1. Chose the Zoom level from the drop down. The larger the number, the more zoomed in the map will be
  2. Enter the Longitude and Latitude of the centre point (this should be in WGS 84 coordinates).
  3. Click the Save Changes button.

Considerations for setting your centre and zoom

  • Think how this will appear on different sizes and shapes of screens, especially for those using mobile devices. You can use preview to see how it will look for users.
  • Make sure you show enough of the map for people to easily understand the location. It is quicker for users to zoom in for more detail than to zoom out to understand the location then back for detail.
  • If you want to have the same starting view on multiple maps, use the form controls to copy the exact latitude and longitude and zoom level.