Creating a circle around map points

The circle function creates a circle around a point or set of points.

These circles could be used to indicate customer spend or size of store by using stored values to determine the size of the circle. This adds a further dimension in the display of point data.

To create the circle:

• Open a map template

• From the Data view, find the schema you would like to use

• Right click on the schema and then select Add Map Layer | Add Layer…

• Change the Layer Type to Area

• Click on the Select… button next to Geometry Expression

• In the Expression box, use a variation of the below expression:

CIRCLE(MASTER.POSTCODE_POINT, 1, 1)

Where:

MASTER.POSTCODE_POINT = This will be the centroid/point column

Distance = The radius for the circle. This can be a static figure, a figure stored in a column, or an expression (if the stored figure is large it may be necessary to divide this by another number to create sensible sized circles)

Unit = The unit for distance; 1=Kilometers 2=Meters, 3=Miles

Graphical user interface, text, application, email Description automatically generated

• Click Ok

• Click Create

Map Description automatically generated

Note: This may not be suitable for large amounts of data as a circle will be created around each point, therefore the circle can overlap