Off Road Riding Spots (with coordinates)
Hey folks... I won't even try to take credit for this, but I've had this info in my "favorites" for a long time.. I figured I'd share.. I make no claims to how accurate any of these are, but the doze...
Forum Discussion
SAR Tracker wrote:Mike Mike Motorbike wrote:
This helps me to understand better.
Butt can you explain map datum and or how to recognize what
wgs-84
nad-83
nad-27
looks like.
At the risk of sounding like a geek, I'll try to explain. A datum is basically a grid on the planet. Maps are drawn according to these grids. How Garmin describes it.
Description of WGS-84 (NAD-83 is basically the same thing).
Description of NAD-27
The difference between the 2 different Datum's (WGS-84/NAD-83 and NAD-27) are a couple hundred meters in 2 directions, usually South and East (if I remember right). Unless you're trying for hyper-accuracy (like geocaching) then leaving your GPS set to WGS-84 should work fine. If you're using a pre-printed topographic map, make sure your GPS Datum is set to the same datum as the map was drawn to.
And then there's the Universal Transverse Mercator (UTM) system......:B The metric system of Lat/Lon!
I'll have to take a little time to sift through this to understand it. One question I have is, how do you get your Garmin GPS and Google Earth to use the same coords? If I punch my Garmin coords into Google Earth, it takes me to the right place, but displays different coords. If I punch the Google Earth coords into my Garmin, I get the wrong location.
Help me Mr. Wizard.
