Saturday, 1 April 2017

Accuracy of Google Maps latitude and longitude?


I am making a program that uses GPS location preferably from smart phone, laptop works too and compares it to a building, the points you in its general direction. I am making this web application specifically for San Jose State Campus for fun. I have read the other posts about the correlation between decimal places and accuracy and a .11m error will be sufficient. Google maps gives me coordinates to the 6th decimal place, I was wondering if they do indeed follow the standard I have read about here. Here is an example of one of the buildings I will index.


https://maps.google.com/maps?q=%2B38%C2%B0+34%27+24.00%22,+-109%C2%B0+32%27+57.00%22&um=1&ie=UTF-8&sa=N&tab=wl


I will only have an arrow point in the direction of the building and rotate it as the lat/long of the user changes and maybe display the approximate distance from the building. I have yet to learn how to properly use google api to draw the users path and etc and that is why I am asking.




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