Bathymetric Map

http://soundwaves.usgs.gov/2007/05/

Description:  Bathymetric Maps are basically topographic land maps but instead they are underwater and use sonar to see what is underneath the surface.  They are designed to give us accurate readings of underwater terrain.  This map not only shows the depths of the water but also shows what the terrain looks like beneath the surface.

Standardized Choropleth Map

http://www.directionsmag.com/articles/choropleth-mapping-with-exploratory-data-analysis/123579

Description:  Standardized Choropleth Map are designed to allow comparison of distribution among areas.  These maps are fairly simple and commonly show variables such as the number of people per square mile in an area.  This map shows the population per square kilometer and portrays this using different colors.

Nominal Area Choropleth Map

http://jcsites.juniata.edu/faculty/rhodes/ida/geospatviz.html

Description:  A Nominal Area Choropleth Map is a simple map that displays nominal data.  The focus for these maps is on categorical data rather than numerical.  This map shows us the how the votes were distributed during the election of Obama and McCain.  It simply uses colors to show the amount of votes, not numbers.

Univariate Choropleth Map

http://rkpjrhist615.wordpress.com/page/6/

Description:  A Univariate Choropleth Map displays a single set of data.  These maps are more simpler than other choropleth maps which display data with multiple variables.  This map conveys the percentage of people over 25 that have a bachelors degree.  Only one set of data is shown in this map and is displayed via colors.

Bivariate Choropleth Map

http://www.geog.ucsb.edu/~jeff/gis/choropleth_maps.html

Description:  Bivariate Choropleth Maps display two different variables on one map usually with colors and symbols.  Here are four different examples of bivariate choropleth maps.  Each of these examples displays two variables related to crimes rates in the US in 2003 and the results of the 2004 election.  Each map uses colors and lines to show the data.

Parallel Coordinate Plot

http://www.whopaidthem.com/

Description: A Parallel Coordinate Graph consists of variables graphed on a vertical axis.  Data from these variables is plotted and connected by points.  Variables tend to be vertical and equally spaced out.  In this graph players total scores were plotted with respect to the questions type.  The red on the graph indicates the top 10% percent of scores.  

Isoline Map

http://pixgood.com/isoline-map.html

Description:  Isoline Maps are a two dimensional representation of a 3D model.  It uses continuous joining lines to show different aspects of the map. For example this is a 2D map that shows a 3D area by using contour lines.