Atlanta, for example, is more than 137 square miles with around 4,200 people per square mile, and the map illustrates this as a mass of red amidst surroundings of more rural areas in green.Ĭurrently based in Milwaukee where he works as the Senior Manager of Data & Analytics for City Forward Collective, Schien focuses on building the maps and other statistical visualizations using open-source tools that help to alleviate financial barriers to information. You can find more of his work on his website. Often, such maps utilize interpolation methods to estimate, across a given surface, where concentration of a given feature might be (e.g., population). For GPWv4, population input data are collected. Density mapping is simply a way to show where points or lines may be concentrated in a given area. It provides globally consistent and spatially explicit data for use in research, policy-making, and communications. The more densely populated an area is, the higher the bars rise. The purpose of GPW is to provide a spatially disaggregated population layer that is compatible with data sets from social, economic, and Earth science disciplines, and remote sensing. Population Density At the moment, there are around 326 million people living in the United States, a country that’s 3.5 million square miles (9. Since I wrote this post, I have created a live-coding tutorial on how to use rayshader to create 3D population density maps. He then translates statistical information about specific regions into highly contrasted maps utilizing Rayshader. FebruBy Jeff Desjardins LinkedIn Visualizing 200 Years of U.S. To compile the maps, Schien digs into the Kontur Population dataset, a publicly accessible project that layers global population numbers derived from sources like the Global Human Settlement Layer-a tool for assessing the presence of people on the planet-along with Microsoft’s Building Footprints and Facebook. Note: Population density is a measure of the average population per square mile of land. 1 Includes the resident population of the 50 states and the District of Columbia, as ascertained by the Decennial Census. In his work with nonprofits and NGOs, he uses R programming language to generate data visualizations that help organizations target where their services are most needed. Population density for the nation and states. It’s one thing to know that Chicago is the third largest city in the United States or that the fastest growing metropolitan areas are in the West and the South, but how can we see it? Data technologist Spencer Schien answers that question with an ongoing series of population density maps of states, rivers, and coastlines. Population density is expressed as persons per square mile. All images © Spencer Shien, shared with permission This map shows the population density in the United States in 2022 by country, state, county, ZIP Code, tract, and block group.
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