Geo_ _graphy van den Keere, 1607
Dec 21, 2015
• Thematic Maps:
Choropleth
Dot
Regions
Patterns
Density
Dispersion
Distribution
Proportional symbol
Isoline
2.2 Based on this map, name four cities with the largest number of African American residents. 2.8 Which color scheme, if any, does a poor job of portraying the percent AfricanAmerican? Why?
1.9. Could we say the same thing about the Boston area – has it become more spread out?
Boston, 1927 (www.mappingboston.org)
Boston, 2000
An alternative to the Equal Frequency or Equal Interval methods:“Natural Breaks”
2.10. Other Ways to Classify Your Information.
0-1/4
0-3%
1/4-1/2
4-6%
1/2-1
7-12%
1-2
13-24%
2+
25%+
2.10. Other Ways to Classify Your Information.
An alternative to the Equal Frequency or Equal Interval methods:“Indexing”
US - 12.3%
¼ = 3%
½ = 6%
1 = 12%
2 = 24%