Garmin GPSMAP 580 Owner's Manual page 31

Averaging the Waypoint's Location
Average Location makes the unit take several sample location
measurements for the waypoint and recalculate for a more accurate
location reading.
NOTE: You must have a GPS satellite fix before you can
average a waypoint's location.
To calculate the average location:
1. Open the Waypoint page, and press Menu.
2. Select Average Location, and press Enter. The fields
change as the unit calculates the average location of the
waypoint.
Average Location page
3. Press Enter to save the location.
GPSMAP 580/585 Owner's Manual
Projecting a Waypoint
You can also create a new waypoint by projecting the distance and
bearing from a specific location to a new location.
To create a new waypoint by projecting its location:
1. On the Main menu, highlight the Points tab and select the
point which you want to porject from, then press Enter.
2. Press Menu.
3. Highlight Project Location, and press Enter.
Project Location menu
Enter the distance, bearing, and location.
4. To change the location from which you are projecting the new
waypoint, highlight the From field, and press Enter.
5. Select the point from which you can project your new
waypoint.
Operation Mode
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