Telling an Old Story with New Maps - Geographic Visualization: Concepts, Tools and Applications - page 94

5.2.22 Living on $50-100 a day

The number of people being shown on each of these maps is falling as the money to live on
increases, despite the range increasing first from $1 ($0-1 a day) to $10 ($0-10 and $10-20),
then to $30 ($20-50), now $50 ($50-100), next to $100 ($100-200), then to near infinity
($100-). From the maps showing a $10 range the numbers have decreased steadily with the
increased range (see Figure 5.24). The information in this graph is needed to understand
how these maps fit together - not only do most poor people live in India, China, Asia Pacific
and African territories; also most people are poor.
Figure 5.24 can also be read with the x -axis showing how much money people have to
live on. At the range of $50-100 a day, there are 488 million people, which is equivalent to

4000

3500

3000

2500

2000

1500

1000

500

0

100 150 200 250

0 50

Range in US $ per day

Figure 5.24 Income per day ( x -axis in dollars) and people ( y -axis in millions)

Figure 5.25 Territory size shows the proportion of all people that rely on US$50-100 purchasing
power parity a day worldwide that lives there (Worldmapper Map 156)