Now, I could write a program to help me shift the data to fit, but as a non geographer I have a feeling I should leave it as it is and let GE catch up instead. Positional Accuracy In Google Maps "My Maps" Vs. Google Earth. If you're measuring a triangular area, click on the first point instead to close the area. Here in England Google Earth appears to be accurate to a metre or so in the places where I’ve checked it.

wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. You would need some survey grade points to truly compare.

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That’s not the case for a digitized orthophoto, since the measurements are done by the computer.

First, I created a point in Google Earth at a highway intersection: Next, I created a point at the same location in Google Maps “My Maps”: Exporting the Google Maps point as a KML file, bringing it in to Google Earth, enlarging the view, and measuring the difference between the two: GM point is from Google Maps, GE Point from Google Earth.

A key is your application's If you don’t see a blue dot, go to the bottom right and tap Your location. cell tower objects. DC2129* NAVD 88 ORTHO HEIGHT - 125.5 (meters) 412. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. Find local businesses, view maps and get driving directions in Google Maps. Geolocation response? See. Cell tower: Your connection to a cellular network can be accurate up to a few thousand meters. Wi-Fi: The location of nearby Wi-Fi networks helps Maps know where you are. The accuracy attribute denotes the accuracy level of the latitude and longitude coordinates. It wouldn’t surprise me if the magnitude and the direction of the shift varied from place to place; if you’re hoping to use either Google Maps or Google Earth for determining positions with high accuracy, you should definitely do a ground check first to see what degree of coordinate shift there may be in your area. cell towers or access points are valid or recognized.

On your computer, open Google Maps. To learn more, see Get Started with Google Maps Platform. Even USGS DOQQ photos are 1-meter resolution, which is GIS-grade but not survey grade. It's hard to see why this would be the case, as I would imagine the two versions of Google Maps use the exact same dataset. If you're using Maps in Lite mode, you’ll see a lightning bolt at the bottom and you won't be able to measure the distance between points. API, Your API key is not valid for the Geolocation API. I have been researching the alignment of Egyptian temples using Google Earth to calculate the azimuths. To add another point, click anywhere on the map. It seems to register pretty well on GE, see: http://www.confound.me.uk/maps/os_example.kml. The imagery in Google Earth is stretched based on the angle of the aerial object taking it.

So, when you are on the top of a mountain, Google Earth shows you way down on its side; similarly, the elevation of well identified points appear wrong due to the horizontal shift of the elevation profile.

The problem with your comparison is that the USGS DOQQ’s have a up to a 33.3 foot error.