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Cartography. Creating Maps. Cartographers must: select the objects to be shown evaluate their relative importance find some way to simplify their form. Cartographers are limited by: the purpose of the map its scale the methods to produce it the accuracy of the data. Map Purpose. - PowerPoint PPT Presentation
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Cartography
CartographyCreating MapsCartographers must: select the objects to be shown evaluate their relative importance find some way to simplify their form. Cartographers are limited by:the purpose of the map its scale the methods to produce it the accuracy of the data.
Map PurposeAesthetics vs. conformality or equivalencePolitical considerations (size vs. importance)
Website to discuss maps, mapmaking or related topics such as GIS, remote sensing and photogrammetry: http://www.cartotalk.com/
Scale
Small ScaleLarge ScaleThe size of a maps smallest discernable unit is itsScaleDensityRegionResolutionProjection
d) Resolution - generally large-scale maps have a great resolution.
Mapping MethodsMapping cycling rides around Toronto 2004 to 2009 using GPS https://www.youtube.com/watch?v=iC56P-Ro4PY TTC Weekday Movement http://vimeo.com/1865789 Ork Posters http://www.orkposters.com/toronto.html
AggregationInformation to be mapped is shown in a summary form e.g. USA elections
GoreBushMcCainObama2000 Election Results2008 Election Results Presidential elections by county and by stateTypes of MapsReference Maps CIA World Factbook: https://www.cia.gov/library/publications/the-world-factbook/docs/refmaps.htmlChoropleth Maps (shading, colouring or placement of symbols) Isoline Maps (uses lines)Proportional Symbol MapsDot MapsMental Maps
Choropleth Maps
http://www.statcan.gc.ca/pub/92f0138m/2008003/figures/5200001-eng.htmIsoline Maps
http://mapmaker.rutgers.edu/355/Journey_to_Work.jpg IsobarConnect points of equal atmospheric pressure
http://www.earthlyissues.com/images/isobar.gif Proportional Symbol Map
http://personal.frostburg.edu/kebachtel0/square%20map.jpg Dot Maps
Mental Maps
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?
SourcesUnited Kingdom Department for communities and local government. http://www.neighbourhood.statistics.gov.uk/HTMLDocs/images/Statistical%20Maps%20-%20Best%20Practice%20v5_tcm97-51126.pdf