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d3v4 Multiple Pie Charts on Map - Data from CSV

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Aandrew-reid
Last edited Mar 17, 2017
Created on Jan 31, 2017

This example shows multiple pie charts overlaid on a geographic map, with data loaded from a CSV file. The map is rendered in SVG using d3.geoMercator projection and topojson, with country land areas and mesh borders drawn in green and white. Pie charts are positioned at latitude-longitude coordinates from the CSV using the same projection, with each pie's slice values parsed from a hyphen-separated string. Labels appear above each chart, and pie slices use the categorical color scheme. The visualization combines geographic context with proportional data display, allowing viewers to compare categorical breakdowns across multiple map locations.

AI-generated description

Based on a question from Stack Overflow, creating multiple charts on a map in d3.

http://stackoverflow.com/questions/41949622/piechart-over-a-map-point-using-d3-js

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