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The Margin Convention

✓ Published1🌍 Public
Ssophburke
Last edited Sep 20, 2019
Created on Sep 16, 2019

This example demonstrates the margin convention in D3, rendering a horizontal bar chart of the ten most populous countries using UN World Population Prospects 2019 data. The SVG visualization maps each country’s 2020 population to a bar width via `d3.scaleLinear` and uses `d3.scaleBand` for the categorical y-axis, with bars grouped inside a translated `<g>` element that respects the specified margin. The React component asynchronously loads CSV data with `d3.csv`, and the chart updates only after the data is fetched, displaying a loading message beforehand.

AI-generated description

A program that makes a bar chart using data data from the [UN World Population Prospects 2019] (https://population.un.org/wpp/Download/Standard/Population/) with axes.

MIT Licensed

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The Margin Convention

This example demonstrates the margin convention in D3 by rendering a horizontal bar chart of the ten most populous countries from a UN population dataset. The chart uses React to manage state and render SVG elements, with D3’s scaleBand and scaleLinear used to map country names and population values to pixel coordinates. A `<g>` element translates the chart by the specified margins, ensuring the bars are positioned within the allotted inner dimensions. The data is loaded asynchronously via `d3.csv`.

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