Grammar of graphics a la ggplot2
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1957 1977 1997
1e+03 1e+04 1e+05 1e+03 1e+04 1e+05 1e+03 1e+04 1e+05
30
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50
60
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80
GDP per capita
Life expectancy
pop
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300,000,000
600,000,000
900,000,000
1,200,000,000
continent
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Africa
Americas
Asia
Europe
Oceania
Health and wealth of countries over time
ggplot(data = gapminder,
aes(x = gdpPercap, y = lifeExp,
size = pop, color = continent)) +
geom_point() + scale_x_log10() +
scale_size_area(label = comma) +
labs(x = ’GDP per capita’, y = ’Life expectancy’,
title = ’Health and wealth of countries over time’)
facet_wrap(~ year)
Jake Hofman (Columbia University) Data visualization February 15, 2019 19 / 21