is a map in which the size of a certain area - a city, say, or a county - is changed according to some specific measure.
Epidemiology Support and Analysis, Research Triangle Park, NC, USA, comments : "I LOVE the contiguous cartogram
A Contiguous option has been added to the Cartogram
Map to present a new and compelling way to display thematic map data.
To create the cartogram
of agro ecological evaluation based on digital terrain model (DTM) there were multitopic grids by methods of spatial interpolation (extrapolation).
In a cartogram
(bottom left), a nation's size expands if its warming contribution is large for its geographic area and contracts if emissions are low per unit area.
It presents a series of Aon Benfield cartogram
maps illustrating global demographic concentrations for population, GDP, wealth and insurance penetration.
including a CARTOGRAM
, and DATA on a variety of topics for all 50 STATES.
The new map created uses a gridded population cartogram
, with each grid cell sized according to the number of people who live there.
method also is rather popular for spatial representation of agro cultures (for example the area of wheat, in ha, per 100 ha of cultivated soil) or population per unit territory (e.
, which is arranged by region, shows states that are currently expected to vote for the Republican presidential nominee (red), and those that are expected to go for President Obama, a Democrat (blue).
Adapted with permission from Cartogram
(the newsletter of the NZ Cartographic Society), 69:4 (Sept.
An area cartogram
, one of the most familiar cartograms
, is a transformed map on which the areas of regions are proportional to the data values.