Pie Charts are some of the first forms of geovisualization to be developed. They are divided into sectors, illustrating relative magnitudes or frequencies or percents.
web site - http://www.srh.noaa.gov/lub/images/safety/swaw/tx-deaths-1988-2005-wx-pie-graph.gif
web site -http://math.albany.edu/~reinhold/m308/Assgnmt1_HowTo.htm
Sonar uses the emission of sound waves in water and the resulting movement of that energy to detect spatial parameters.
This is a high-definition sonar map of some of the shelf-edge reef habitat off South Carolina from the SC Dept. of Natural Resources.
web site - http://www.dnr.sc.gov/news/Yr2006/oct23/oct23_maps_pic.html.
An interactive map is usually a program that allows the user to display various data on a given spatial representation.
This an Inglehart Values Map, which visualizes the strong correlation of values in different cultures. Countries are clustered according to how religious/secular they are and what particular sect its citizens practice.
web site - http://www.worldvaluessurvey.com/library/set_illustrations.html
This is an isobaric (air pressure) weather map. The lines (contours) signify areas of common pressure. High pressure areas are usually clear while low pressure areas bring wind and precipitation. Lines that are close together mean strong winds.
web site - http://ww2010.atmos.uiuc.edu/(Gh)/wx/cwp/prods/current/sfcslp/sfcslp_N.gif
A histogram is a graphical display of tabulated frequencies. In this case, what's being tabulated is the frequency of distribution of height among students in one class.
This one is for Yucca Mountain, Nevada - and communicates where radiation could spread if there were a worst-case scenario contamination at a proposed nuclear waste reserve.
web site - http://www.state.nv.us/nucwaste/trans/rwma0108.pdf
This particular map shows the percentage of Persons of Hispanic Origin in each state in the year 2000.
Choropleth maps are either standardized or unstandardized depending on whether the data has been areally averaged.
This is a standardized map because the data is relativized to a commom denomenator (percentage).
web site: http://www.sitemaker.umich.edu/356.haas/files/us_map.jpg
This is an unstandardized choropleth map. The variables here are not areally averaged, which makes it look much different that if it were, let's say, U.S.-born Hispanic citizens per square mile (population density).
A Cadastral map is one one which an area is partitioned by one of several systems (metes and bounds or PLSS, for example).
This one is entitled, "Within sight of the White House : section of Washington, D.C., known as "Hooker's Division," which contains 50 saloons and 109 bawdy-houses--list of 61 places where liquor is sold with government [sic] but without city licenses."
web site: http://www.ushistoricalarchive.com/statemaps/dc/32.html
A population pyramid is a graphical representation - a data visualization - of a given group of people's age.
This one, a cross-section of Iran's population age, suggests that the nation is relatively very young. The vast majority are under 30 years old.
web site: http://www.nationmaster.com/country/ir/Age_distribution
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A propaganda map is used in order to influence opinion - regardless of whether that map is accurate or intentionally misleading.
A cartogram is a data visualization in which the magnitude of a given variable is represented by re-shaping the map itself.
This map is a cartogram of world net immigration. The larger countries recieve the most immigrants. There's also a propaganda element here; the map was found on a conservative news site in belgium - and a marxist blog.
A Doppler map of my home, Jacksonville. It’s obviously a July afternoon!
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