Working WithCartograms

Cartograms give graphic representations of data in ways that

help us visually compare areas.

http://www.odt.org/Pictures/poplcart.jpg

In other words, cartograms make it easy to generally compare places just by looking at them

– instead of having to read all of the statistics.

http://www.odt.org/Pictures/map%20image%20only%201200.jpg

Global wealth

http://www.odt.org/Pictures/map%20image%20only%201200.jpg http://www.odt.org/Pictures/poplcart.jpg

Cartograms representing the same information may look slightly

different.

Both represent population.

http://www-viz.tamu.edu/faculty/house/cartograms/1996Cartogram.html

http://www.bts.gov/programs/geographic_information_services/maps/structurally_deficient_bridges_on_the_national_highway_system/images/us.gif

Populations of U.S. States

Which states have the largest populations?

Which have very small populations?

http://www-viz.tamu.edu/faculty/house/cartograms/DecadeAnim.html

Another perspective. . .

Which African countries have the largest populations?

http://www.odt.org/Pictures/map%20image%20only%201200.jpg http://www.odt.org/Pictures/poplcart.jpg

Remember: Cartograms can look slightly different and still both be accurate. They are not actual maps. They represent comparative data.

How are these cartograms of

Europe’s population different?

http://www.odt.org/Pictures/map%20image%20only%201200.jpg

http://www.odt.org/Pictures/poplcart.jpg

How are they the same?