Visualizing Hierarchies - Spatial Mathematics: Theory and Practice through Mapping - page 169

Next, make a dot density map of the raw numbers of 18 to 21 year-olds. In
your opinion, which of the maps—graduated color, pie chart, or dot map—is
the easiest to understand for mapping this type of variable at a county-wide
scale, and why? The disadvantage of the pie chart map at the scale of exam-
ining the whole of Denver County is that there are so many of them. But at
larger scales, the pie chart map might be the ideal map to use because you can
vary what each wedge shows, thus increasing the amount of understandable
content in a small space. How many block groups exist that have 10% or more
of their population between 18 and 21 years of age? You have now determined
another criterion for locating an Internet café in Denver.
7.5 Related theory and practice: Access through QR codes
Theory
Persistent archive:
University of Michigan Library Deep Blue: http://deepblue.lib.umich.edu/handle/2027.42/58219
From Institute of Mathematical Geography site: http://www.imagenet.org/
Arlinghaus, S. L. and M. Batty. 2006. Visualizing Rank and Size of Cities and Towns. Part II: Greater London, 1901-2001.
Solstice: An Electronic Journal of Geography and Mathematics , Volume XVII, Number 2, Institute of Mathematical
Geography. http://www-personal.umich.edu/~copyrght/image/solstice/win06/arlbat2/indexPartII.html
Arlinghaus, S. L. and W. C. Arlinghaus. 2005. Spatial Synthesis: Volume I, Centrality and Hierarchy. Book 1 . Ann Arbor:
Institute of Mathematical Geography. http://www-personal.umich.edu/~copyrght/image/books/Spatial%20
Synthesis2/
Arlinghaus, S. L. and W. C. Arlinghaus. 2004. Spatial Synthesis Sampler. Geometric Visualization of Hexagonal Hierarchies:
Animation and Virtual Reality. Solstice: An Electronic Journal of Geography and Mathematics . Volume XV, No. 1. Ann
Arbor: Institute of Mathematical Geography. http://www-personal.umich.edu/~copyrght/image/solstice/sum04/
sampler/index.html
Arlinghaus, S. 1993. Microcell Hex-nets. Solstice: An Electronic Journal of Geography and Mathematics . Volume IV, No. 1.
Ann Arbor: Institute of Mathematical Geography. http://www-personal.umich.edu/%7Ecopyrght/image/solstice/
sols193.html
Arlinghaus, S. 1990. Fractal geometry of infinite pixel sequences: `Super-definition' resolution? Solstice: An Electronic
Journal of Geography and Mathematics . Volume I, Number 2. Ann Arbor: Institute of Mathematical Geography. http://
www-personal.umich.edu/%7Ecopyrght/image/solstice/sols290.html