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Topic: Cartogram

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	election 2000 maps
		The two-variable contiguous area cartogram on the left depicts enumeration units proportionally scaled to the data that they represent.
		The cartogram is therefore one of the truest form of quantitative mapping.
		This is why a cartogram legend should include a continuous tone color bar, showing a continuous data range from minimum to maximum value (not labeled).
	www.geog.ucsb.edu /~sara/html/mapping/election/map.html (567 words)

	Cartogram Types
		A cartogram is a type of graphic that depicts attributes of geographic objects as the object's area.
		Because a cartogram does not depict geographic space, but rather changes the size of objects depending on a certain attribute, a cartogram is not a true map.
		Cartograms vary on their degree in which geographic space is changed; some appear very similar to a map, however some look nothing like a map at all.
	www.ncgia.ucsb.edu /projects/Cartogram_Central/types.html (905 words)

	RGS/IBG PRESENTATION EXAMPLES PAGE - INTERNET VERSION (Site not responding. Last check: 2007-10-25)
		In this context the term cartogram should be taken to mean equal population cartogram.
		Cartograms differ from traditional maps as they use a variable other than area to derive the size of areal units on the map.
		The cartogram gives a different overall trend, suggesting that the majority of areas have a male population of working age of over 60% (red and purple on the map).
	www.csiss.org /classics/archive/cartogram.html (487 words)

	Bettina Speckmann - Cartograms - FIFA World Cup
		Cartograms are a useful and intuitive way to visualize statistical data about a set of regions like countries, states, or provinces.
		The size of a region in a cartogram corresponds to a particular geographic variable.
		The most common variable is population: in a population cartogram, the sizes (measured in area) of the regions are proportional to their population.
	www.win.tue.nl /~speckman/Cartograms/SoccerCarto.html (289 words)

	Geography 372: Introductory Cartography
		Cartograms scale space in some measure other than physical units we are used to.
		For this lab, you are to construct a continuous cartogram in which the acres of the ten provinces and the territories of
		The easiest way of doing this would be to scan the draft cartogram into the computer and trace over it using the Freehand Tool in Corel.
	www.geog.ubc.ca /courses/geog372/labs/lab9cart02.html (433 words)

	Election result maps
		That is, states are drawn with a size proportional not to their sheer topographic acreage -- which has little to do with politics -- but to the number of their inhabitants, states with more people appearing larger than states with fewer, regardless of their actual area on the ground.
		The cartogram reveals what we know already from the news: that the country was actually very evenly divided by the vote, rather than being dominated by one side or the other.
		The areas of red and blue on the cartogram are now proportional to the actual numbers of electoral votes won by each candidate.
	www.cscs.umich.edu /~crshalizi/election (1238 words)

	Making a Cartogram - An Educator's Reference Desk Lesson Plan
		On a cartogram, sizes of geographic areas are changed to show the statistical information.
		After making a variety of cartogram, students can use a variety of higher level thinking skills to analyze the relationships they see in comparing the various charts.
		Example: An excellent source of cartograms are found in "The New State of the World Atlas", by Kidron and Segal.
	www.eduref.org /Virtual/Lessons/Social_Studies/Geography/GGR0021.html (446 words)

	HALLINAN'S HOME: GEOGRAPHY 102: ASSIGNMENT #4
		Cartograms are useful devices that replace the usual physical area measurements of states and countries shown on maps with areas sized by other quantitative measures--population, GNP, or, in our assignment, number of mentions on search engines and data bases.
		Submit the cartogram and--on the reverse side of the cartogram--a brief written summary of what you think the cartogram shows.
		You may, for example, compare the percentage each place has on the cartogram to the percentage of the region's land or population that it claims.
	www.csus.edu /indiv/h/hallinan/102no4f3.htm (566 words)

	Creating a Cartogram (Site not responding. Last check: 2007-10-25)
		A cartogram is a map in which the sizes of the enumeration units have been rescaled according to an attribute they posses rather than their actual size.
		For more in formation on cartograms and the original code visit Michael Gastner's Home page, the creator of the code used to create the carograms pictured on his page.
		If you are interested in Michael Gastner's method of creating cartograms but don't have access to a Unix machine I have created an EXE file that acts exactly the same way on a Windows machine.
	www.jatrigis.com /cartogram/cartogram.htm (156 words)

	Cartography Questions Chapter 11
		The major requirement for a cartogram to be successful is that the reader must be: (a) highly trained in scale interpretation; (b) able to see color; (c) familiar with the form of the total study area and its internal enumeration units; (d) able to count to one hundred; (e) familiar with latitude and longitude coordinates.
		Cartograms are unique in that: (a) the representative fraction and verbal scale stay the same during enlargement or reduction; (b) the thematic symbolization also forms the base map; (c) the base map contains size, shape, orientation, and contiguity information; (d) ALL of these are true; (e) NONE of these are true.
		The advantage of cartograms include: (a) shocking the reader with unexpected spatial peculiarities; (b) develop clarity in what might otherwise be a cluttered map; (c) show distributions that might otherwise be obscured by wide variation in the sizes of the enumeration areas; (d) ALL of these; (e) NONE of these.
	www.jsu.edu /depart/geography/mhill/cart/cqch11.html (968 words)

	Cartograms - Images of the social and economic world - Rehydration Project
		In this map the sizes of countries are proportional not to their actual landmass but instead to the number of people living there; a country with 20 million people, for instance, appears twice as large as a country with 10 million.
		Cartograms are most often used to show population data, but there is no reason why they need be limited to population.
		Data for the population cartogram were taken from the Gridded Population of the World compiled by the International Center for Earth Science at Columbia University; elevation and bathymetric data were taken from the NOAA 2-minute Gridded Global Relief data set.
	www.rehydrate.org /resources/cartograms.htm (656 words)

	RETANET \| Using Cartograms to Learn about Latin American Demographics
		For example, on a cartogram for oil production, Saudi Arabia would appear to be the largest nation on the face of the earth, and tiny countries such as Bahrain and Kuwait would appear to be very large as well.
		Cartograms - Maps which show political units such as countries in their appropriate shape and relative location, but size is determined by the amount of whatever statistic is being illustrated.
		These cartograms should have either be a statement such as "one square equals 1 million people" or the square may be illustrated and followed by the statement "= 1 million people".
	retanet.unm.edu /article.pl?sid=03/05/18/1912011 (1826 words)

	Cartogram - History of Cartography - Cartographers Remote Sensing
		Cartogram is a diagram that makes use of a form of map to present numeric information while maintaining a degree of geographical accuracy.
		Cartogram could be constructed manually or with the help of computers.
		Note that cartogram is not a true map as it does not show geographic space but changes the size of objects based on a certain attribute.
	www.clearleadinc.com /site/cartography.html (729 words)

	Cartograms, Tag Clouds and Visualization (Site not responding. Last check: 2007-10-25)
		Cartograms are the distorted but captivating maps that change the familiar shapes of places on a map to visually show data about geographic locations.
		Cartograms change the way locations appear to make a point or communicate relative differences in the underlying data; for example, by making countries with higher GDP (gross domestic product) bigger, and those with lower GDP smaller.
		Where cartograms change geographic units, tag clouds change the display of a list of labels (the end point of a chain of linkages connecting concepts to focuses) to communicate the semantic importance or context of the underlying concepts shown in the list.
	www.joelamantia.com /blog/archives/ideas/cartograms_tag_clouds_and_visualization.html (1069 words)

	[No title]
		The states on the cartogram are drawn in mathematical proportion to their populations.
		In a cartogram, the size of each state is not related to the size of the land area.
		This cartogram was specially drawn so that the size of each state is proportional to the number of people who live there.
	www.census.gov /dmd/www/text/9-12b.txt (1737 words)

	Forums - Election 04 Cartograms. Very Interesting. (Site not responding. Last check: 2007-10-25)
		Changing one cartogram from a statewide result to a county-by-county result should not alter the overall proportions or outline, unless one is trying to skew results, and that, of course, would invalidate the whole process (unless you're Dan Rather).
		Although not stated, such a cartogram would have to maintain (to scale) the same area and circumference as the geographic US map which preceded it, otherwise the shapes hold no meaning relative to their intended subject.
		Assuming the two are related and from the same source, the first cartogram should determine the size and shape of the pie.
	www.rottentomatoes.com /vine/showthread.php?t=418367 (1301 words)

	Worldmapper: The world as you've never seen it before
		Worldmapper is a collection of world maps, using equal area cartograms where territories are re-sized on each map according to a particular variable.
		In order to make it easier see what a these cartograms are showing, we try to preserve the shapes of individual territories, and keep them adjacent to adjacent territories and sea.
		Equal area cartograms require that you have appropriate data for all 200 territories that we are mapping.
	www.worldmapper.org /about.html (2174 words)

	A Better Distorted View: Science News Online, Aug. 28, 2004
		The conversion of a geographic map into a cartogram reminded the physicists of diffusion—the process by which a gas spreads to fill available space until it has a uniform density throughout.
		To demonstrate the technique's effectiveness and versatility, they created cartograms displaying the results of the U.S. presidential election of 2000, lung cancer rates among males in the state of New York, and the distribution of wire service news stories by state.
		The researchers extracted the dateline from about 72,000 wire-service news stories from 1994 to 1998 and changed a standard map (top) into a cartogram (bottom) in which the sizes of states are proportional to the frequency of their appearance in datelines.
	www.sciencenews.org /articles/20040828/bob8.asp (2123 words)

	Election result maps
		We can correct for this by making use of a cartogram, a map in which the sizes of states have been rescaled according to their population.
		The cartogram was made using the diffusion method of Gastner and Newman.
		Iowa and New Mexico, which at the time of writing were officially undeclared, we have assumed to have a Republican majority -- all indications are that this will be the final declaration once recounts are complete.
	oceanpark.com /webmuseum/2004/election_maps_2004.html (927 words)

	ArcScripts Details - ESRI Support
		Cartogram Creator generates non-contiguous cartograms, non-contiguous circular cartograms, and contiguous cartograms.
		Contiguous cartograms are generated using the "Rubber Sheet" method described in Dougenik, J. Chrisman, and D. Niemeyer.
		But do remember that selecting your feature set to base your cartogram on is critical.
	arcscripts.esri.com /details.asp?dbid=14090 (395 words)

	From The Cover: Diffusion-based method for producing density-equalizing maps -- Gastner and Newman 101 (20): 7499 -- ...
		The construction of cartograms is a challenging undertaking.
		arbitrary expansion of the cartogram as the population diffused
		Results of the 2000 U.S. presidential election shown on a standard Albers conic projection (c), on a cartogram based on the population density in a (d), and on a cartogram constructed with the finer population density of b (e).
	www.pnas.org /cgi/content/full/101/20/7499 (4363 words)

	Population Cartogram (Site not responding. Last check: 2007-10-25)
		A cartogram is not a conventional map, it is, as you can see distorted.
		In this case it is distorted to attempt to create a constant area per person, based on census 2001 population figures at district/unitary level.
		This map has been distorted to allow all districts/unitaries to fall within a range of 0.3 to 0.5 ha/person.
	www.swo.org.uk /census/cartogram.asp (95 words)

	Ecological Footprint @ Pthbb!! (Site not responding. Last check: 2007-10-25)
		I am currently working on an updated cartogram using data from the 2006 edition of the Living Planet Report.
		Some regions for which footprint data was unavailable (shown in blue on the map) were mistakenly scaled by population en lieu of area.
		Also note that the current cartogram was a business-as-usual extrapolation of the 2005 edition's 2002 data to the then present (2005) population for each country.
	pthbb.org /natural/footprint (573 words)

	Introduction of Cartogram
		The basic idea of constructing a cartogram is to distort a map by resizing its regions according to a statistical parameter, but in a way that keeps the map recognizable.
		Commonly, the hand-made cartograms are non-contiguous cartograms as it is hard to keep areas the right size and link the borders well simutanously.
		A contiguous cartogram construction method is always required to be able to preserve essential cues for the recognition of regional shape and automatically achieve the desired region area while maintaining correct map topology.
	www.sasi.group.shef.ac.uk /tao/Introduce.html (298 words)

	The Geomblog: The 'Purple Haze', revisited.
		Cartograms are indeed hard to compute: this is an interesting geometric problem, as Jeff Erickson also points out.
		Stephen North (the one mentioned above) and colleagues have developed methods for computing cartograms and I used their approach to create a cartogram of the election results.
		The cartogram is fabulous, but the data for Nevada, at least, looks wrong in comparison with Vanderbei's and other county-by-county maps...
	geomblog.blogspot.com /2004/11/purple-haze-revisited.html (2482 words)

	Cartogram Research
		We present a new constraint-based automatic cartogram construction method that successfully achieves desired region areas while maintaining map topology and preserving essential shape cues to enable region recognition.
		A continuous area cartogram is a map transformation in which the map regions are resized relative to the geographic distribution of a data set.
		Cartogram Animation of U.S. Population Cartograms from 1900 to 1996
	www-viz.tamu.edu /faculty/house/cartograms/index.html (314 words)

	Suresh Venkatasubramanian :: Cartogram
		I am a computational geometer, and the problem of computing a cartogram for a map (where the weight function could be population, income levels, disease prevalence, what have you) is an interesting challenge, mainly because of the problems I described above.
		People had asked him (and I had wondered as well), whether the map could be represented as a cartogram, where each county was distorted to represent its true population, so as to make a more representative picture.
		Fortunately, I have colleagues who work on cartograms (more on this in the Credits), and was able to use their cartogram to create an equivalent purple map.
	www.research.att.com /~suresh/cartogram (496 words)

	[No title] (Site not responding. Last check: 2007-10-25)
		It is a cartogram, a mapping device where regions are given areas proportional to their populations.
		The continental cartogram clearly shows that Asia is the place where the people are and it is also where most of the infected domestic birds are in close proximity to them.
		So while it is certainly possible a viral strain, adapted to humans and easily transmitted from person to person, could arise anywhere in the world, the odds still favor Asia.
	effectmeasure.blogspot.com /2005/12/continental-cartogram-and-bird-flu.html (293 words)

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