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A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position, and two or three of the numbers represent a horizontal position. A common choice of coordinates is latitude, longitude and elevation.

Longitude lines are perpendicular to and latitude lines are parallel to the equator.

A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position, and two or three of the numbers represent a horizontal position. A common choice of coordinates is latitude, longitude and elevation.

To specify a location on a two-dimensional map requires a map projection.

Geographic Coordinate System

Lecture about the Geographic Coordinate System.

Geographic Coordinate Systems

CEE 468/668 - GIS Applications in Civil Engineering University of Nevada Las Vegas.

04a GIS: Understanding Coordinate Systems

An overview to understand coordinate systems in GIS. Summarizing Chapter 4 of Using GIS for Wildland Search and Rescue for Columbia College, CA GIS ...

"Geographic Coordinate Systems" and "Projected Coordinate Systems" in ArcGIS and ArcMap

Let's take a look at the way ArcMap in ArcGIS understands projections. ArcMap uses things called "Geographic Coordinate Systems" and "Projected Coordinate ...

How Do GPS Coordinates Work?

So you've seen those location-tagging numbers on maps and GPS devices before, but do you actually know what they mean? Brainstuff is here to fill you in.

Intro to coordinate systems and UTM projection

Please watch before class on Tuesday 4/4. There is a quiz link on the Canvas page.