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

✓ Published0🌍 Public

Last edited Nov 1, 2020

Created on Oct 26, 2020

A choropleth map displays the global percentage of national populations with mental illness for a selected year, with a linked line chart below showing each country's trend over time. Moving the mouse across the chart updates the selected year, redrawing the map's sequential blue color scale and positioning a vertical line on the line chart. The visualization uses React with D3 v5, including `geoNaturalEarth1` and `geoPath` for map projections, `scaleSequential` for coloring, and `scaleTime`/`scaleLinear` for the line chart. Data comes from a CSV of mental health disorders, with country boundaries from 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:

Mental Healths Disorders Dataset
Country boundaries from World Atlas TopoJSON, polished for visual style, including graticules.

MIT Licensed

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