http://topomaps.usgs.gov/drg/
DRG stands for digital raster graphic. A DRG is a digital raster graphic scanned image of a U.S. Geological Survey. The image shown inside the map is georeferenced to the surface of the earth and fit to the Universal Transverse Mercator projection.
A star plot is a graphical representation of small multi-variate data sets. This graph is an example of fictitious speech quality.
http://amphibiaweb.org/amphibian/cartograms/
A cartogram is a map in which some thematic mapping variable is substituted for land area or distance. This map shows where all the threatened and endangered species of amphibians are all over the world.
http://personalpages.manchester.ac.uk/staff/m.dodge/cybergeography/atlas/census.html
A statistical map is a map that shows of a factor such as rainfall, population, or crops in a geographic area. This map shows the growth of internet use in Africa.
http://www.pmel.noaa.gov/maillists/tmap/ferret_users/fu_2007/msg00384.html
A triangle plot, can also be called a ternary plot, is a graph of 3 variables. It usually shows the relative compositions of soils and rocks, but it can be applied to any system of three variables.
http://www.uwsp.edu/geo/faculty/ritter/glossary/A_D/climograph.html
A climograph is a depiction of the monthly precipitation and temperature conditions for a given location. This is a climograph of Memphis, Tennessee.
http://www.creativemappingsolutions.com/maps/thematic/thematic1.html
Thematic maps are used to show a particular theme associated with a specific geographic area. They can show physical, social, political, cultural, economic, sociological, agricultural, or any other aspects of the given area. This map shows the land reserves of hawaii.
