Flow Map

http://www.lib.utexas.edu/maps/texas/combtrk_tx_1998.jpg

Flow maps are commonly used to show movement from one location to another. The number of people in a migration, the amount of goods being traded, or the number of packets in a network are just a few examples of flow maps. They are beneficial in reducing visual clutter by merging edges.

Isoline Map

http://personal.uncc.edu/lagaro/2101/2101_ProjectsF99/isolines.gif

An isoline map uses continuos lines to join points of the same value. It is commonly used to portray the weather such as highs and lows in temperatures or levels of precipitation in a particular area.

Proportional Circle Map

http://pubs.usgs.gov/fs/fs-004-03/images/fig5lg.gif

Proportional circle maps display a data set by varying the size of the circles in relation to the values of the various data. The greater the value of the spotlighted statistic, the larger the circle used to represent that data.

Choropleth Map

http://www.pop.psu.edu/images/gia/maps/changeanim.gif

In choropleth maps, the areas are shaded or patterned in proportion to the measurement of statistical data being displayed such as population or income. It makes it easier to visualize how widely a measurement can vary in a given geographic area or region.

Dot Distribution Map

http://aede.osu.edu/programs/exurbs/Maps2/tshippop1.jpg

Dot distribution maps portray quantitative data as a dot which represents a number of the population found within the boundary of a geographic area. The pattern of distributed dots reflect the general locations where the smallest and largest populations occur. In addition, the pattern and number of dots within a geographic area reveal the density of the population.

Propaganda Map

http://strangemaps.files.wordpress.com/2006/09/sur-le-vif-germany-wins-001.jpg

This propaganda map displays what is expected Europe would look like if Germany had won World War I. Propaganda maps commonly show the artist's feelings on a particular subject matter and what they feel could have or should have happened.

Hypsometric Map

http://www.ocs.orst.edu/pub/maps/Precipitation/Total/States/AZ/az.gif

Hypsometric maps represent the terrain shown through shading colors. The cartographer has to choose the number of different color classes along with their limiting contour lines and the colors. Light colors are the most common and "higher is brighter" is generally true in hypsometric mapping.