Teaching:TUW - UE InfoVis WS 2008/09 - Gruppe 01 - Aufgabe 1 - Cartogram: Difference between revisions

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=== Definition ===
=== Definition ===
A Cartogram is a small diagram, on the face of a map, showing quantitative information or an abstracted and simplified map the base of which is not true to scale. Simply we can say cartograms are unique representations of geographical space. They use cartographic outlines to represent data which depends on this source.
A Cartogram is a small diagram, on the face of a map, showing quantitative information or an abstracted and simplified map the base of which is not true to scale. Simply we can say cartograms are unique representations of geographical space. They use cartographic outlines to represent data which depends on this source.
[[image:USA2.jpg]]
On the left side you can see a traditional map of the United states and on the right side a Cartogram of USA depending on the population density.
=== Types of Cartograms ===
* Non-Continuous Cartograms
In non-continuous cartograms the regions on the map don't have to be connected to their neighbors. In this type of cartogram it is important to see the shape of the original map. User will recognize the map just because of their borders. The regions in the map are displaying the content with their own size. For an example a region with a smaller population will be smaller than a sector with a higher population.
[[image:noncont.jpg|center]]
*  Continuos Cartograms
Different to the non-continuous cartograms, the important point is that the regions in the map are connected to each other. Accordingly the shape of each region is changing their size. Therefore the outline of the hole map changes.
[[image:europe.jpg|center]]

Revision as of 16:25, 3 November 2008

Cartogram

Definition

A Cartogram is a small diagram, on the face of a map, showing quantitative information or an abstracted and simplified map the base of which is not true to scale. Simply we can say cartograms are unique representations of geographical space. They use cartographic outlines to represent data which depends on this source.

On the left side you can see a traditional map of the United states and on the right side a Cartogram of USA depending on the population density.

Types of Cartograms

  • Non-Continuous Cartograms

In non-continuous cartograms the regions on the map don't have to be connected to their neighbors. In this type of cartogram it is important to see the shape of the original map. User will recognize the map just because of their borders. The regions in the map are displaying the content with their own size. For an example a region with a smaller population will be smaller than a sector with a higher population.

  • Continuos Cartograms

Different to the non-continuous cartograms, the important point is that the regions in the map are connected to each other. Accordingly the shape of each region is changing their size. Therefore the outline of the hole map changes.