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Margin Convention (Bar Chart)

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Rroc286
Last edited Mar 1, 2022
Created on Mar 1, 2022

This example shows a horizontal bar chart of the top 10 countries by projected 2020 population, using data from the UN Population 2019 dataset loaded via `d3.csv`. The visualization applies the margin convention by defining an SVG container with a fixed width and height, then translating a group element by the left and top margins. Bars are rendered as SVG `<rect>` elements, with positions and widths computed using `d3.scaleBand` for the categorical y-axis and `d3.scaleLinear` for the quantitative x-axis. React manages the component state and lifecycle, fetching the data with `useEffect` and rendering declaratively.

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A program that loads in some data about CSS named colors using D3 utilities, and uses React to render the data as a radial burst!

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