IntroGIS - Introduction to GIS Chapter 1, Longley et al....

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Introduction to GIS 1 Chapter 1, Longley et al. (2005)
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Course Content on Mycourses@UD Logon to Mycourses@UD homepage - http://www.udel.edu/mycourses Enter UDelNetID and password If sitting in, please give instruction your name Guest access (case sensitive): UDelNetID - ??? Password - ??? Content Modules Exercises 2
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Introduction: Why does GIS matter? Almost everything that happens, happens somewhere. Knowing where something happens is of critical importance. Most (perhaps all) decisions have geographic consequences. Geographic location is an important attribute of activities, policies, strategies, and plans. Geographic information systems are a special class of information systems Because location is so important, it is an issue in many of the problems society must solve. Routine issues Extraordinary occurrences (Application Box 1.1, p5) 3
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Geographic Problems Problems that involve an aspect of location information used to solve them solutions Examples ? (p4) 4
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Classifying Geographic Problems 1. Spatial scale or level of geographic detail 2. Intent or purpose Practical in nature Scientific 3. Time scale (p7) Operational Tactical Strategic Geographic databases are often transactional , meaning they are constantly being updated as new information arrives. 5
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Geographical versus Spatial Terms Geographical refers to Earth’s surface, near-surface, atmosphere Spatial refers to any space, not only the space on Earth’s surface/atmosphere Geospatial – subset of spatial applied specifically to the Earth’s surface and near-surface National Intelligence and Mapping Agency renamed National Geospatial-Intelligience Agency Web portal for US Federal Government data called Geospatial One-Stop 6
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Spatial is Special Why is geography so important? Why has geographic information spawned an entire
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IntroGIS - Introduction to GIS Chapter 1, Longley et al....

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