Transcription of Introduction to Geographical Data Visualization
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Introduction to Geographical Data Visualization
Copyright 2009 Stephen Few, Perceptual EdgePage 1 of 11 The important stories that numbers have to tell often involve location where things are or where they ve occurred. When we display quantitative information on a map, we combine visual displays of both abstract and physical data . Quantitative information is abstract it doesn t have physical form. Whenever we represent quantitative data visually, whether on a map or otherwise, we must come up with visual objects that represent abstract concepts in a clear and understandable manner, such as sales are going up, represented by a line, or expenses have deviated from the budget in both directions during the course of the year, represented by bars extending up or down from a baseline of nFebMa rAprMa yJunJu lAugSe pOctNo vDecSales in Dollars-8,000-6,000-4,000-2,00002,0004,0 006,000 JanFebMarAprMayJunJulAugSepOctNovDecDevi a on f rom Expense Budget in Dollars
Cartography: A Guide to Effective Map Design, ... Introduction to Geographical Data Visualization Stephen Few Data Visualization GIS, maps, geographical data, geospatial data, Perceptual Edge, Stephen Few, Show Me the Numbers, Information Dashboard Design, information visualization, data visualization, mashup, mash-up ...
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