From the BBC:
July 29, 2016
Australia is to shift its longitude and latitude to address a gap between local co-ordinates and those from global navigation satellite systems (GNSS).
Local co-ordinates, used to produce maps and measurements, and global ones differ by more than 1m.
The body responsible for the change said it would help the development of self-driving cars, which need accurate location data to navigate.
Australia moves about 7cm north annually because of tectonic movements.
Modern satellite systems provide location data based on global lines of longitude and latitude, which do not move even if the continents on Earth shift.
However, many countries produce maps and measurements with the lines of longitude and latitude fixed to their local continent.
Continue reading Australia Plans New Coordinates to Fix Sat-Nav Gap
Is Africa bigger than North America?
Yes! In fact, North America, including United States, Canada, Mexico, and Greenland, could easily fit inside Africa with plenty of room left to add Central America, Argentina, Chile, and Bolivia too.
Most of the maps we use day to day distort the relative sizes of countries, making countries near the equator look relatively small and countries near the north and south pole look relatively huge. However, we can compare the true sizes of countries by using a different type of map.
Click below to get to the good stuff!!
Interesting video into the introductory ideas of spheroids & geoids.
Everyone’s favorite GIS topic!!!
Name your favorite map projects (how can you pick just one???) and then click on the link: http://xkcd.com/977/
Courtesy of Dr. Karen Owen’s slide from the Geo Tech Conference.