Just returned from a trip out west. I wanted to retain the coordinates of sites visited to make a comprehensive map using Google Maps. I did a "Where Am I" at each site and saved it in my Favorites file.
I'm home now and when I put the coordinates in Google Maps I'm 30 or 40 miles off most of the time. What did I do wrong?
Have you tried to check the waypoints on MapSource?
And you have used your GPS on your trip without any problems?
What did I do wrong?
In what format are you supplying the coordinates to Google Maps?
Sounds like your GPSr is in one format and Google is in a different format. I prefer degree decimal.
To change format on Nuvi 255, you select Where to>Coordinates>Format. Degree Decimal is the 3rd choice.
Just to expound on what everyone has said, you like are using mismatched coordinate formats.
Coordinates can be expressed in several different formats.
They are most commonly Degrees Minutes Seconds (DDD MM SS), Decimal Degrees (DDD.DDDD), or Degrees Decimal Minutes (DDD MM.MMM).
The last format is the most common in current GPS models. The second one is the one we use in Custom POI files.
Here are some examples of the same coordinates expressed in different formats.
Degrees, Minutes and Seconds
DDD° MM' SS.S"
N 32° 18' 23.1" W 122° 36' 52.5"
N 32.30642° W 122.61458°
Degrees and Decimal Minutes
N 32° 18.385' W 122° 36.875'
So, here are some options.
Change the format format on the GPS unit.
Convert the coordinates to the format Google Maps wants.
Use Google Earth.
Use GPS Visualizer.
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