Bivariate choropleth map

http://www.geocities.com/stevejford/Africa_Choropleth.jpg

This bivariate choropleth map is of Africa and shows the land use, life expectancy and GNP per capita in Africa for the year of 1989. The country names are not labeled and the map only provides high level general information.

Nominal area choropleth map

http://www.historyofmacedonia.org/ConciseMacedonia/images/map_of_macedonia.jpg

The nominal area choropleth map displayed above is used to display nominal data. This map is of the southern Balkins and is used to show quantitative differences.  

Isoline Map

http://www.unc.edu/depts/oceanweb/turtles/juvenilemap/EarthMF.html

Isoline map have continuous lines joining points of the same value. The map here shows the isolines of magnetic field inclination along the east coast of the U.S.

Box plot

http://water.epa.gov/type/rsl/monitoring/vms62.cfm

Box plot maps are used to summarize a set of data. The map above displays scores from site samples of a creek. Box plot maps are also known as Whisker Plots.   

Parallel coordinate graph

http://www.matthewtavares.com/baseball_report/graph_allteams.bmp

Parallel coordinate graphs use parallel coordinates to show statistics. This type of graph is used to plot a large set of data. The map above shows baseball statistics however no timeframe is provided.

Stem and Leaf Plot

http://www.eduplace.com/math/mhm/5/06a/index.html

Stem and Leaf plots are displayed in the form of a graph as shown above.  The title is shown at the top and the data is displayed in the bottom portion. This type of map is used to plot simple data in an effective way.

DRG

http://www.tceq.texas.gov/gis/drg.html

DRG, digital raster graphic, is a scanned copy of a USGS topographic map. It represents all georeferenced images on earth. The above graph image is of a river in Colorado.