Planimetric Map

A planimetric map is a two dimensional representation which includes no relief features, such a street map. The planimetric map to the left is a map of St. Petersburg, FL

 http://www.sanborn.com/products/CitySets_pdf/CSboundaries_STPETERSBURG.pdf

DOQQ - Digital Orthophoto Quarter Quads

http://www.nd.edu/~underc/east/maps/

DOQQs combine an areal photograph with the geometric qualities of a map by georeferencing the image and orthorectifying it. Orthorectification is the process of adjusting the photographs to minimize distortion created in capturing an image of three dimensional terrain and translating the information to a two dimensional map.

Continuously Variable Circle Map

A continuously variable circle map demonstrates the quantity of a variable through the use of circles which vary in size according to the quantity of the variable at that particular point without limiting the size options for the circles.  The map below is a circle map of the volcanism in the Colombian region. Continuously Variable circle maps can be used to plot infinite points of variable sizes, here to show strength of volcanic activity.

http://www.volcano.si.edu/world/volcano.cfm?vnum=1501-08=&volpage=var

Mental Map

According to About.com:geography, a mental map as "a map which represents the perceptions and knowledge a person has of an area." This map is an example of a mental map that I found on a blog about making a map of your own community.

This map can be found at

http://blog.mywonderfulworld.org/2010/05/create-a-mental-map-of-your-community.html