To quickly visualize and compare living condition factors in different cities, Candy created this set of information graphics for The World Bank. The percentage of residents with different basic services are plotted along each axis and by connecting the dots and filling in the shape you get a larger picture of how much people have or don’t have in underserved areas of various cities. The more color, the better. You can measure the differences in many factors between Nairobi, Dakar and Johannesburg with one polygonal shape. Research by Sumila Gulyani, Debabrata Talukdar, and Darby Jack (2008) for the Africa Sustainable Development Department of The World Bank.