Combo Overlay with average overlays

This page describes a use case for implementing a combo overlay.

Use Case Description

In an area, the locations for a clinic, a school and a sports center are known. Which area is for all three locations within a one kilometer range?

For this we would need to combine three average grid overlays, one for each location. then we would need to combine these three ranges in a new combo overlay, linking all three AVG overlays with a formula.

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  Average Overlay Clinic

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  Average Overlay School

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  Average Overlay Sports center

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  Combo Overlay with features

Formula

The formula for the use case, based on the operators table on the combo overlay page, would look like this:

MUL(MIN(A, B, C), 10)

Where A, B and C are the average grid overlays.

How to

How to add a Combo Overlay with features:

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  Select Distance Sight Overlay

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  Select Legend tab

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  Select "Has Custom Legend"

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  Add new entry

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  Edit the name, value and color of the entry