D3.js Tutorial

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D3.js Tutorial

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Last edited Feb 19, 2023

Created on Jan 30, 2023

This example shows a D3.js bar chart that displays the scores of seven individuals, sorted in descending order. The chart uses a band scale for the x-axis and a linear scale for the y-axis, with bars rendered as SVG rectangles that highlight on hover. The code calls on d3.scaleBand, d3.scaleLinear, d3.axisLeft, and d3.axisBottom to construct the axes and layout, while data is sorted with d3.descending before binding. The visualization is embedded in a minimal HTML page with D3 v5 loaded from a CDN.

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A bare minimum HTML page demonstrating use of CSS and JavaScript.

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This example shows a bar chart of test scores for seven people, sorted from highest to lowest score, with royal blue bars, labeled axes, and hover opacity feedback on each bar. The visualization uses D3.js v5 with an SVG rendering approach, creating scales via `d3.scaleBand` for the x-axis and `d3.scaleLinear` for the y-axis. It appends rectangles bound to an array of name-score objects, calls `d3.axisBottom` and `d3.axisLeft` for the axes, and sorts the data with `d3.descending`. The chart is embedded in a basic HTML page with a centered title.

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