Margin Convention

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Margin Convention

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Last edited Jan 5, 2024

Created on Jan 5, 2024

This example demonstrates the margin convention in D3 by rendering a bar chart of UN population data for 2019. The chart displays the top 10 countries by population using SVG rectangles, with a margin object defining spacing around the plot area. React manages the component state, fetching data via d3.csv and scaling with d3.scaleBand and d3.scaleLinear. The inner dimensions are calculated by subtracting margins from the full width and height, and the chart group is translated accordingly to position the bars correctly within the SVG.

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The Margin Convention

This example demonstrates the margin convention in D3 by rendering a horizontal bar chart of UN population data for 2019. The chart displays the top 10 countries by population using SVG rectangles, with scales created via `d3.scaleBand` and `d3.scaleLinear`. A margin object defines the inner plotting area dimensions, and a `<g>` element translates the chart into place. Data is loaded asynchronously from a CSV using `d3.csv`, and the visualization is built with React components and D3 v7.

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