Doppler Radar

http://kwilklab.wordpress.com/author/kwilk1984/

Doppler radar images are mostly seen related to meteorology, and are able to predict possible storm paths. Doppler radar is capable of estimating reflectivity as well as rotational velocity. Doppler radar is also used by police officers in radar guns to detect individuals who may be speeding.

Dot Distribution Maps

http://flatrock.org.nz/topics/new_jersey/where_do_they_live_and_what_do_they_do.htm

Dot distribution maps are useful for showing concentrations of a certain variable across a region. They help the user to visualize how a large number of isolated cases can make an area altogether crowded with data. The example map shows population distribution in New Jersey, where each dot accounts for 500 people.

Thematic Maps

http://antiqueprintsblog.blogspot.com/2010/12/thematic-maps.html

Thematic Maps are defined by a single data theme displayed over a geographic area. Thematic maps can be about land use, political favor, or the spread of disease. Above is an early map showing lines of magnetic variation in the Atlantic ocean.

Bilateral Graph

http://www.marketoracle.co.uk/Article22616.html

Bilateral Graphs show two related variables, and their growth/decline over time. The graph above shows an increase in the United Kingdom population and a decrease in completed housing projects over a span of forty years.

Planimetric Map

http://www.loc.gov/rr/geogmap/guide/gmillgen.html

Planimetric maps can be presented in many different ways, but the only stipulation is that it does not define vertical space. The map above shows a large area, with perhaps an urban developed area to the south. However there is no definition of buildings or depressions in the land.

Black and White Aerial Photography

http://wodumedia.com/britain-from-space/another-aerial-view-of-london-in-black-and-white/

Black and white aerial photos are able to capture a large section of landscape and define objects such as buildings roads, and bridges. The black and white resolution can become a bit muddled at times, and vegetation is not very distinguishable, but shadowed objects and particularly urban areas are fairly well defined.

Infrared Aerial Photography

http://californiamapsociety.org/mapping/remote.php

Infrared aerial photos are useful in creating an image that easily differentiates between physical features such as rivers, oceans, mountains, and vegetation. They are less useful for urban areas. A special film produces colors the human eye is able to see, otherwise infrared light is invisible.