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Datum & Coordinate Systems

Datum & Coordinate Systems. Lecture 6. Representing Geography Maps. Maps are a 2-D representation of Reality Legend Scale (ratio of map distance: real world distance) Directional arrow As a 3-D world is represented in 2-D, the transformation Always involves distortion. Datum.

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Decimal Degree and Degree-Minute-Second Form

Decimal Degree and Degree-Minute-Second Form. There are two basic forms for expressing degrees: Decimal Degrees (DD) Degree-Minute-Second (DMS). An essential skill in Trigonometry is to be able to convert from DD to DMS and from DMS to DD. Basic Conversions. 1 degree = 60 minutes.

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1 minute 1 60 - PowerPoint PPT Presentation

Datum &amp; Coordinate Systems

Decimal Degree and Degree-Minute-Second Form

Datum & Coordinate Systems