What are the 5 types of thematic maps and map projections?
There are many different types of thematic maps. Each uses a different symbol to depict information. A choropleth map is based on numerical data on some topic, with data available for enumeration districts (usually political units such as counties, states, or countries). The numerical values are used to place each of the districts into a particular category. An area symbol (usually a color or shade of gray) is then used to show which category each of the enumeration districts falls into. This link takes you to a very nice program that will create choropleth maps of United States Bureau of the Census data. Highly recommended! Dot maps employ dots to convey information about a distribution. A single dot may represent one occurence of something (an earthquake, perhaps) or more than one (a dot might represent 100,000 people, for example). Graduated circle maps also use a point symbol, but the symbols have different sizes in proportion to some qualtity that occurs at that point. The populat
