Classed Choropleth Map

A classed choropleth map is a map that represents data by the coloring or shading of data. This map from 1992 represents the beef cattle emissions in North Carolina. The middle and northern part of the state have the highest number of emissions with the east coast having the least.

http://personal.uncc.edu/lagaro/2101/2101_ProjectsS2001/JonathanKozar.html

Range Graded Proportional Circle Map

A range graded proportional circle map depicts the circles in relation to ranges of data. In this map the area of the circle is proportional to the channel width, and the color of the large circle approximates the color of the water.

http://pubs.usgs.gov/fs/fs-004-03/

Continuously variable proportional circle map

A continuously variable proportional circle map uses circles in order to create point data. The circles being used are in proportion to the data that is measured. For example, this graph represent the amount of people killed in road accidents in Europe in the year 2000. Italy is within a few of the largest circle's meaning that they are included in some of the highest numbers of people killed in road accidents.

http://personal.frostburg.edu/krtopping0/maps.htm

DOQQ

A DOQQ is a remote sensing digital map that is computer generated using aerial photographs. The red shade of the DOQQ in comparison to an aerial view can be changed if needed to make certain distinctions stand out.

http://www.crwr.utexas.edu/gis/gishydro00/Class/trmproj/Donnelly/termproject.htm

DEM

This Digital Elevation Model is showing the Oak Ridges Moraine. This ridge separates Lake Ontario from Lake Simooe. Oak ridges moraine is 160 km long of sand, silt and gravel deposits that is oriented approximately east-west and lies north of Lake Ontario.

http://www.ypdt-camc.ca/

Isopleth Map

An isopleth map is able to generalize and simplify data with a continuous distribution. This given map is of Mexico and it is using lines to show the connecting places of equal distribution of temperatures. This isopleth map is also showing political boundaries, major cities, the country's capital city, major rivers, and lakes.

http://www.bestcountryreports.com/Temperature_Map_Mexico.html

DRG Map

This Digital Raster Graphic (DRG) Map is being used as a back drop for other digital data. For example this map in perticular the lakes, rivers and streams are able to be checked for completeness by putting it over a DRG.

https://www.e-education.psu.edu/natureofgeoinfo/c6_p6.html