Working With Cartograms. Cartograms give graphic representations of data in ways that help us...

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?