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Published byMervyn Green Modified over 9 years ago
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Mapping the World
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The importance of proper map research Case study #1: Titanic
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The tragic outcome
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The importance of proper map use Case study #2: Blair Witch Project
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The fatal error
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The result
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If you know how to read a map… You will get along with your friends. You will find your way back home. You will live to a ripe old age.
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If you don’t know how to read a map… You will argue and fight with your friends. You will cuss a whole lot. You will die a horrible, gruesome death at the hands of supernatural demons.
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MAPS = LIFE
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Maps Elements of a map Latitude and longitude Scale Map projection Types of maps Mental maps
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Elements of a map POINTS –cities, sites, etc. LINES –boundaries, routes, etc. FILLS –political colors, thematic patterns, etc. TYPE/SYMBOLS –Labels, statistical charts, etc.
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Spatial Change Over Time: Baseball Teams, 1952 and 1998
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Spatial Interaction: Flows of Foreign Investment
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Shuttle Columbia, Feb. 1, 2003
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Latitude and Longitude Latitude lines (parallels) run East-West, labeled N or S 90 ˚ N Longitude lines (meridians) run North-South, labeled E or W. Santiago, Chile 33 ˚ 26’ S, 70 ˚ 40’ W Poniatowski, Wisconsin 45˚ N, 90˚ W International Date Line 180˚ Degree ˚ Minutes ‘
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Poniatowski, Wisconsin 45˚ N, 90˚ W
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Projections: Turning a globe into a map
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World Map Projections
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All Map Projections Distort… Distance, or Direction, or Shape, or A combination of the above.
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Mercator Projection
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Goode’s Homolosine Projection
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Peters Projection
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Robinson Projection
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Shape distortions of projections Molleweide Mercator Cylindrical Equal-Area
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Scale
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Scale: Meaning #1 The size/scope of places being studied Local Global Think in terms of local issues vs regional, national, or global issues
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Scale: Meaning #2 Shows the ratio of distance and area on Earth to the distance and area on a map Example: one cm on map equals 1 km Representations: –proportional fraction (1/100,000) –ratio (1:100,000) –bar scale –verbal statement
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BAR SCALES RATIO
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Opposite meaning of “scale” A large-scale map shows a small area A small-scale map shows a larger area A scale of 1/5,000 is a large-scale map compared to a scale of 1/1,000,000.
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Types of maps Choroplethic –Uses choropleths, or existing (political) units Isometric –Uses isolines, or data lines (such as contours) Symbolic –Proportional representation, located charts, etc. Cartograms Or a combination of the above
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Choroplethic map : Calorie supply
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Isometric map : Spatial Diffusion of College Soccer
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Isometric map: Time-Space Compression
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Topographic map (using elevation contour isolines)
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Proportional symbols map : AIDS victims
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Located chart map: Population increase
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Cartogram: Population growth rates
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Geographic Information Systems (GIS) Data-driven systems Allows merging (comparison) of data using layers of information on a map. Fastest growing area of geographic jobs Highly technical, centered in government and business
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Mental (cognitive) maps of our geographical perceptions
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New Yorker’s View of the World
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The World as seen from Ukraine
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Mental map interpretation Selection of information, details, labels Omission is as important as inclusion Proportions of sizes, scales, shapes Choice of physical or cultural features Relative placement of features Influence of personal experience Influence of media and world events Effect of core, periphery, semi-periphery
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