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A6 Bar

✓ Published0🌍 Public
RRavneet Singh Bhatia
Last edited Mar 4, 2024
Created on Mar 4, 2024

This bar chart displays the average number of forward gears for the top 10 car manufacturers from a CSV dataset, with bars colored by a sequential rainbow scale. It uses D3.js to load and aggregate data with `d3.csv` and `d3.rollup`, then renders horizontal bars via SVG rectangles. The chart includes axes, labels, and a color legend generated with `d3-legend`’s `legendColor`, while the color mapping uses `d3.scaleSequential` with `d3.interpolateRainbow`.

AI-generated description

A blank slate starting point showing the "Hello World" for the VizHub V3 Runtime Environment, which supports continuous hot reloading with interactive widgets.

  • There is no index.html - that's what triggers the V3 Runtime
  • The entry point is the main function exported from index.js
  • The main function takes an argument container, a DIV that has measurable dimensions using clientWidth and clientHeight
  • The second argument to main is an options object containing state and setState.
  • The state of the application is stored in state, which is initialized as an empty object {}.
  • The setState function can be called with a function that uses the previous state to create a new state object using immutable update patterns.
  • For an interactive example, see Mouse Follower.

Full course playlist: YouTube: Constructing Visualization 2024.

MIT Licensed

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