Combo Overlay with average overlays: Difference between revisions
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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? | 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 | For this we would need to combine three [[Average Overlay|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. | ||
<gallery> | |||
Image:FOO-attr-avg-1.jpg|Average Overlay Clinic | |||
Image:BAR-attr-avg-1.jpg|Average Overlay School | |||
Image:BOO-attr-avg-1.jpg|Average Overlay Sports center | |||
Image:Combo_Overlay_with_features1.jpg|Combo Overlay with features | |||
</gallery> | |||
==Formula== | ==Formula== | ||
Revision as of 14:31, 8 December 2020
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.
Average Overlay Clinic
Average Overlay School
Average Overlay Sports center
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 AVG grid overlays.
How to
Select Distance Sight Overlay
Select Legend tab
Select "Has Custom Legend"
Add new entry
Edit the name, value and color of the entry
