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Introduction to Geospatial Data Department of Land and Spatial Sciences Faculty of Engineering and the Built Environment Unit 1 – IGD411S 1 INTRODUCTION Unit 1 – IGD411S 2 Unit 1: Introduction to Geospatial Data Unit Objectives At the end of this Unit you should be able to: • Describe the characteristics of different maps and their usefulness • Name and explain different types of data models • Describe three types of co-ordinate systems • List and provide concrete examples of types of maps and their uses • Define different types of datums • Read coordinates from a map • Plot coordinates on a map Unit 1 – IGD411S 3 Contents • Section 1 : Introduction to Geospatial Data • Section 2 : Mapping the Earth Unit 1 – IGD411S 4 Section 1 Introduction to Geospatial Data Unit 1 – IGD411S 5 Geographic Data • The discipline ‘geography’ studies both the distributions and interrelationships of earth phenomena that includes man-made (artificial) and natural features. • Geospatial data is a representation of earth or geographic phenomena. • Geographic phenomena - an observable fact that happens on or above the earth’s surface. • Examples of geographic phenomena include: - Artificial: Buildings, Sett...