Maps & Cartography

World Geodetic System (WGS84)

World Geodetic System (WGS84)

The World Geodetic System 1984 (WGS84) is a spatial reference system of GPS satellites with an error of less than 2 cm to the center of Earth.

Survey Benchmark Monument Locations

Survey Benchmark Monument Locations

If you’re serious about geocaching, than you’ve probably heard of benchmark hunting. A survey benchmark is a disk in the ground with a latitude & longitude.

5 Maps That Explain the Arctic

5 Maps That Explain the Arctic

Mineral extraction, natural gas as well as potential shipping routes. These Arctic Maps display one of the last great frontiers for human development.

Quantile Classification in GIS

Quantile Classification in GIS

Quantile classification divides classes so that the total number of features in each class are approximately the same (which is useful for showing rankings)