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Aalexwd019@gmail.com
Last edited Sep 26, 2024
Created on Sep 26, 2024
Forked from Marks and Channels

This visualization demonstrates the foundational concept of Marks and Channels through a series of simple, generated datasets. It renders points, lines, and rectangles using D3’s `select` and `join` API, with each channel—x-position, y-position, size, length, and color—varied independently to show how data attributes map to visual encodings. The bar chart uses horizontal line lengths, while scattered circles and a color scheme from `d3.schemeCategory10` illustrate categorical hue. The code is modular, with separate JavaScript files for each mark and channel, and relies on D3 modules for the SVG rendering.

AI-generated description

A demonstration of basic D3 usage to implement the concept of Marks and Channels. Includes usage of:

  • Point Marks by X, Y, Size
  • Line mark varying in length
  • Scaling factors
  • SVG Rectangles
  • selection.each()
  • SVG Path Elements
  • d3.symbol()
  • SVG attributes transform and fill
  • D3 Color Schemes
  • JavaScript Modules

Part of the Constructing Visualizations Playlist.

See also blocks.roadtolarissa.com: Marks and Channels (a vanilla JavaScript version of this).

MIT Licensed

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