dataviz

China mainland population density

In an earlier post we mapped the urbanization rate of China at province level. In this post we will go futher by visualizing where Chinese people are living using a gridded population map. We will use the NASA dataset (Population Density Grid, v3 (1990, 1995, 2000)) which consists of estimates of human population by 2.5 arc-minute grid cells. A proportional allocation gridding algorithm, utilizing more than 300,000 national and sub-national administrative units, is used to assign population values to grid cells.

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China Urbanisation & Large cities

Objective In this article we are going to plot a map of China urbanization rate per provinces together with Chinese cities with at least 2 millions population. In a nutshell : 1 - Get rural and urban population data from official China statistic bureau, clean the data, same two steps for Chinese largest cities 2 - Prepare a map of China with provinces 3 - Get data for the main Chinese cities, population, names and longitude, latitude 4 - Plot China base map with provincial subdivisions, choropleth of urbanization rate, add main cities

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Map of China mainland provinces, municipalities and autonomous regions (in Chinese)

In this article we are going to plot a simple map of China with different levels of subdivisions using both base and ggplot2 systems. In a nutshell : get shape files with different subdivision levels clean data, get proper provinces Chinese names plot China base map with subdivisions both is base and ggplot systems add subdivision names on the map There are three excellent reference article (with maps of Nepal and Toronto) for such process :

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