Coordinate Systems and Datum Transformation in ArcGIS Brittney White and Melita Kennedy Where is my data? Problem Horizontal Vertical Projections Transformations Horizontal coordinate systems Geographic and Projected What does a coordinate system tell us? Distance Location Direction Distance Q: How far is it from San Francisco to Los Angeles? 352.34 miles 690.67 kilometers 567.03 kilometers 620111.549 yards Distance Q: How far is it from San Francisco to Los Angeles? A: It depends on the coordinate system. 352.34 miles 690.67 kilometers 567.03 kilometers 620111.549 yards Location Q: What are the coordinates for Los Angeles? (-118.25, 34.05) (1276.333, 2421.545) (2054060.514, 3897101.109) (-13163527.521, 4035514.817) Location Q: What are the coordinates for Los Angeles? A: It depends on the coordinate system. (-118.25, 34.05) (1276.333, 2421.545) (2054060.514, 3897101.109) (-13163527.521, 4035514.817) Direction Q: In which direction is the North Pole? Down To the right Up Can’t, not on the map