Continuously Variable Proportional Circle Map: A proportional circle map using circles that are in proportion to the variable being measured.

Digital Orthophoto Quarter Quadrangle (DOQQ): A digital raster (pixel based ) image of an aerial photograph in which displacements caused by the camera and terrain have been removed through orthorectification. It combines the image qualities of a photograph with the geometric qualities of a map. A DOQ is either B&W or color infrared (CIR) and represents one USGS 7.5 minute quadrangle. A DOQQ is one quarter of the quadrangle, so the DOQ name is followed by SE, NE, SW, or NW. DOQQ scale is 1:12,000 or 1" = 1,000' .

Digital Elevation Model (DEM): A representation of the Earth's surface stored in a digital file containing regularly spaced point locations with an elevation attribute. It can also use shading to represent hieghts.

Digital Line Graph : A digital version of the USGS Topographic Quad maps. They contain vector line representations of cartographic map features and attribute codes. They are organized by scale and thematic content.

DRG Map: Digital Raster Graphic map, a scanned image of a USGS topographic map that has been georeferenced to the earth's surface and referenced to a UTM projection.

Isopleth Map: The lines drawn on the map connect points that have equal amounts of some variable such as sunshine (isohel). This one shows how the map is constructed.

Isopach Map: The lines drawn on the map connect points of equal thickness of rock strata.

Isohyet Map: A map consisting of lines drawn connecting points of equal rainfall.

Isotach Map: Lines on a weather connect points of equal wind speed.

Isobar Map: Lines on a weather map connecting points of equal air pressure.

LIDAR Map: Light Detection and Ranging, also called Lasar Radar it is a method of detecting distant objects and determining their position, velocity, or other characteristics by analysis of pulsed laser light reflected from their surfaces. It is useful for creating accurate DEMs.

Google Earth Satellite Image: This is an image taken from a satellite of Glascow.

Doppler Radar Map: This uses the Doppler effect to show patterns of suspended and moveing precipitation particles.

Black and White Aerial Photo: An aerial photo taken in black and white only.

Infrared Aerial Photo: Infrared EM waves have a wavelength in the range of c. 75 x 10,000,000 to c. 100,000 x 10,000,000. Roughly between visible light and radio wavelengths. This is a heat image of a forest.

Cartographic Animation: The use of GIS and computer databases to create animated, changeable, interactive maps. This can include temporal animations, generalization animations (e.g. change of births), geographic trend animations (e.g. census data), and classification animations. This one shows the dates of African independence.

Statistical Map: A map in which the variation in the quantity of a factor such as rainfall, population, or crops in an area is indicated. A dot map is one type. In a statistical map each unit is represented by a shading or color that represents the value or range of values for that variable. The statistics shown on the map can express rates, ratios, percentages or other statistical measures. Values in the distribution must be mutually exclusive and exhaustive. This one is for a mining operation.

Cartogram: a cartogram is broadly defined as a map using statistical symbols. It is also defined as a type of map transformation based on a scale other than a true scale. This one supposedly shows countries by population size.

Flow Map: Similar to a network map but with line width varied to show value. A network map is a set of connected lines with similar values.

Isoline Map: A presentation of statistical data in geographical distribution. Data classified and grouped within areas such as states and counties, sahded according to value. The lines represent continuous levels of some value.

Proportionnal Circle Map: point data measured with a circle instead of a dot. The area of each circle is proportional to the statistical data represented for any given region of the map. This one is from the 2006 Canada census.

Chloropleth Map: A map that uses graded differences in shading or color or the placing of symbols in defined areas on the map in order to indicate the average values of some property or quantity in those areas. This one is a map of hay distribution in these united states.

Dot Distribution Map: It uses the quantity of dots to represent the location and concentration of something. A greater density of dots represents a greater concentration. Dots do not vary in size but may be differentiated by shapes or colors. This one is of the distribution of a type of fungus.

Propaganda map: In this case it was used to illustrate the danger of nuclear missles in Cuba. Propaganda is a concerted set of messages aimed at influencing the behaviors or opinions of large numbers of people. It uses disinformation or the selective presentation of information to create a false and usually emotionally manipulative mental map.

Hypsometric map: A 3-D representation of a surface with relief. It represents the elevation with color and the area between contour lines, shaping and raised relief.

Cadastral Map: a legal map that describes boundaries and ownership. This one is of Fairfax county and was made up of 30 layers of data.

Thematic Map: It displays a spatial distribution of an attribute that relates to a theme. In this case it is a distribution of population in the United States.

Topographic Map: shows both vertical and horizontal features with relief. This one is of Lake George.

This is a Planimetric map of Lake George. A Planimetric map has horizontal features without regard to elevation.