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DataViz Project - Third Visualization - Mental Illness Choropleth Map with Linked Line Chart

✓ Published0🌍 Public
FFelipe Mejías
Last edited Oct 25, 2020
Created on Oct 25, 2020

A choropleth map shades countries by the percentage of their population with mental illness for a selected year, while a linked line chart below plots the same metric over time for every country. Moving the mouse horizontally across the chart updates the map to the corresponding year. The visualization uses React with D3 v5, including `geoNaturalEarth1` and `geoPath` for the map, `scaleSequential` with `interpolatePuBu` for color encoding, and `scaleTime` for the year axis. Data comes from a CSV of mental health disorders, with country boundaries from World Atlas TopoJSON.

AI-generated description

This visualization was constructed using the D3 & React.

The idea behind this visualization is to analyze how the percentage of the world population that suffers from a mental illness has varied over the years. In this case, a Choropleth map allows me to better analyze the change in the percentage of the world population over the years, and allows me to answer questions such as:

Questions I wanted to answer with this visualization

  • How has the percentage of mental diseases in each country changed over time?
  • Has there been a decrease in people with mental illnesses, or rather an increase?

The data used in this visualization can be found here:

MIT Licensed

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