Featured Graphic: GDP, Livability, Population, and Income Inequality of World Cities
该图表结合GDP、宜居性、收入不平等和人口四个指标，展示了全球98个城市的特征，帮助读者快速比较城市的经济竞争力、社会状况和人口规模。
In this graphic, we combine information on four different indicators to assess cities' social, economic, and environmental characteristics in a global context: 1) Gross Domestic Product (GDP) per capita which reflects cities' economic competitiveness; 2) livability measures focusing on cities' social issues such as safety, education and health; 3) income inequality of the country that individual cities locate; and 4) urban populations.Based on the data availability in these four datasets, a total of 98 cities across the world are presented in this graphic.Cities' standardized, logged GDP per capita values are plotted on the X-axis, against their standardized livability measurements on the Y-axis.Data points represent individual cities and their sizes are proportional to cities' populations.Darker colour of data points represent greater income inequality, and vice versa.Centering at the coordinate origin, the plot is divided into four quadrants.Upper right quadrant: Cities with above-average values in dimensions are on the top of the global urban hierarchy, with relatively large populations, high-level livability, and well economic performance.Lower right quadrant: In this quadrant lie leading cities from the erstwhile 'Third World', which represent greater national income inequality, host large populations, and have comparatively low quality of living.Upper left quadrant: Cities in this category are primarily located in welfare states where income inequalities are lowest.Lower left quadrant: African cities dominant in this category, and are usually deemed as backwaters in the otherwise increasing integrated world economy, but by the inequality within their countries they vary greatly.