The

**geographic coordinate system**(GCS) is a spherical or ellipsoidal**coordinate system**for measuring and communicating positions directly on the Earth as latitude and longitude. It is the simplest, oldest and most widely used of the various spatial reference systems that are**in**use, and forms the basis for most others.- Decimal Degrees
Decimal degrees (DD) is a notation for expressing latitude...

- Geodetic Coordinates
Geodetic coordinates are a type of curvilinear orthogonal...

- Decimal Degrees
A geographical

**coordinate****system**is a**coordinate****system**. This means that every place can be specified by a set of three numbers, called**coordinates**. A**full**circle can be divided into 360 degrees (or 360°); this was first done by the Babylonians; Ancient Greeks, like Ptolemy later extended the theory. Today, degrees are divided further.**Geographic****coordinate system**, the spherical**coordinates**of latitude and longitude Projected**coordinate****systems**, including thousands of cartesian**coordinate****systems**, each based on a map projection to create a planar surface of the world or a region.A

**geographic****coordinate system**(GCS) uses a three-dimensional spherical surface to define locations on the earth. A GCS is often incorrectly called a datum, but a datum is only one part of a GCS. A GCS includes an angular unit of measure, a prime meridian, and a datum (based on a spheroid ).The

**geographic coordinate system**(GCS) is a spherical or ellipsoidal**coordinate system**for measuring and communicating positions directly on the Earth as latitude and longitude. It is the simplest, oldest and most widely used of the various spatial reference systems that are**in**use, and forms the basis for most others.**Geographic****coordinate****systems**(GCS) are based on a three-dimensional ellipsoidal or spherical surface, and locations are defined using angular measurements, usually in decimal degrees, measuring degrees of longitude (x-**coordinates**) and degrees of latitude (y-**coordinates**).A

**geographic****coordinate****system**(GCS) is a reference framework that defines the locations of features on a model of the earth. It’s shaped like a globe—spherical. Its units are angular, usually degrees. A projected**coordinate****system**(PCS) is flat. It contains a GCS, but it converts that GCS into a flat surface, using math (the projection ...