UTM


GIS Learning

Geographic Coordinate System

Geographic Coordinate System

Map projections allow us to convert from sphere to planar (flat) representation. Geographic coordinate systems allow for the measurements of distances and to determine direction. Except for the Geographic Grid all coordinate systems are based on some form of map projection. Coordinates In a coordinate system, the X value given […]

GIS Learning

Map Projections and Coordinate Systems

Map Projections and Coordinate Systems

What are Map Projections? The shape of the earth is roughly spherical wheres as maps are two dimensional.   Map projection is a set of techniques designed to depict with reasonable accuracy the spherical earth in a two-dimensional (i.e. flat) media.  Map projection types are created by an imaginary source of […]

GIS Learning

How to Calculate the Boundaries of an UTM Zone

How to Calculate the Boundaries of an UTM Zone

Calculating the eastern and western boundaries of a UTM is very straightforward.  Developed by the U.S. Army, the Universal Transverse Mercator (UTM) is an international plane (rectangular) coordinate system. In the coordinate system, the world is divided into 60 zones of 6 degrees longitude. Each zone extends 3 degrees east […]