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Cartographers must: 1. select the objects to be shown 2. evaluate their relative importance 3. find some way to simplify their form. Cartographers are limited by: 1. the purpose of the map 2. its scale 3. the methods to produce it 4. the accuracy of the data.
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Aesthetics vs. conformality or equivalence Political considerations (size vs. importance) Website to discuss maps, mapmaking or related topics such as GIS, remote sensing and photogrammetry: http://www.cartotalk.com/http://www.cartotalk.com/
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Small Scale Large Scale
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a) Scale b) Density c) Region d) Resolution e) Projection d) Resolution - generally large-scale maps have a great resolution.
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Mapping cycling rides around Toronto 2004 to 2009 using GPS https://www.youtube.com/watch?v=iC56P-Ro4PY https://www.youtube.com/watch?v=iC56P-Ro4PY TTC Weekday Movement http://vimeo.com/1865789 http://vimeo.com/1865789 Ork Posters http://www.orkposters.com/toronto.html http://www.orkposters.com/toronto.html
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Information to be mapped is shown in a summary form e.g. USA elections Gore Bush McCain Obama 2000 Election Results 2008 Election Results Presidential elections by county and by state
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Reference Maps CIA World Factbook: https://www.cia.gov/library/publications/the- world-factbook/docs/refmaps.htmlhttps://www.cia.gov/library/publications/the- world-factbook/docs/refmaps.html Choropleth Maps (shading, colouring or placement of symbols) Isoline Maps (uses lines) Proportional Symbol Maps Dot Maps Mental Maps
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http://www.statcan.gc.ca/pub/92f0138m/2008 003/figures/5200001-eng.htm
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http://mapmaker.rutgers.ed u/355/Journey_to_Work.jpg
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Connect points of equal atmospheric pressure http://www.earthlyissue s.com/images/isobar.gif
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http://person al.frostburg.e du/kebachtel 0/square%20 map.jpg
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AP exam Free Response Question based on a Cartogram: Shown above is a special type of graphic used by geographers. 1. Identify the type of graphic by name. 2. What qualities does it have that qualify it as a graph? 3. What qualities would qualify it as a map?
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United Kingdom Department for communities and local government. http://www.neighbourhood.statistics.gov.uk/HTMLDoc s/images/Statistical%20Maps%20- %20Best%20Practice%20v5_tcm97-51126.pdf http://www.neighbourhood.statistics.gov.uk/HTMLDoc s/images/Statistical%20Maps%20- %20Best%20Practice%20v5_tcm97-51126.pdf
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