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Geography (1,356)
Lecture

Why Care About Maps

2 Pages
53 Views

Department
Geography
Course Code
Geography 1400F/G
Professor
Godwin Arku

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Description
Jan 16 12 Why Care About MapsMaps have been important in the past because of hunting trade navigation and land division Maps can be used for spatial analysis ex John Snows map of the London Cholera outbreakGIS Geographic Information Systems or computer mapping Integrates hardware software and data for capturing managing analyzing and displaying all forms of geographically referenced information Contributors are people data analysis hardware and software Data collection work study studentsinternsdata management research assistantsgrad studentsdata analysis research assistantsgrad studentsdata presentation grad studentsprofessorsdecision making professorsplannerspoliticiansplanning processreal world Concepts of GISTypes of Spatial Data We can use both concepts together through layeringRasterGrid uses cells or pixels like a digital picture Has unique values ex elevation land use climate data Vector Geometrical shapes Has entity points label points and nodes ex incidents people intersections fire hydrants Polylines are line segments links chains and arcs ex road and sewer networks rivers Polyg
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