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RIAA Music Format Historical Trends

✓ Published0🌍 Public
CCurran Kelleher
Last edited Oct 6, 2025
Created on Oct 6, 2025

This streamgraph visualizes the changing revenue of music formats in the US from 1973 to 2019, using data from the RIAA. The chart, built with React and D3.js, stacks area layers for formats like CD, Cassette, and Streaming, with automatic label placement via `d3-area-label`. The visualization applies a blur to the data before stacking with a wiggle offset, and employs `d3.scaleTime`, `d3.scaleLinear`, and `d3.scaleOrdinal` for scales. An x-axis with grid lines is rendered using `d3.axisBottom`.

AI-generated description

Streamgraph with d3-area-label

This project demonstrates a streamgraph visualization using D3.js with automatic label placement using the d3-area-label library.

Features

  • Stacked area chart (streamgraph) showing revenue data by format over time
  • Automatic label placement using d3-area-label
  • Interactive visualization built with React and D3.js

Dependencies

  • React 19.1.0
  • D3.js 7.9.0
  • d3-area-label 1.6.0

Files

  • index.html - Main HTML file with import maps
  • index.js - React application entry point
  • App.js - Main React component
  • viz.js - Main visualization orchestrator
  • prepare-data.js - Data transformation and stacking logic
  • scales.js - Scale creation (x, y, color)
  • render-areas.js - Streamgraph area rendering
  • render-labels.js - Area label rendering with d3-area-label
  • axis.js - Axis rendering
  • axis-labels.js - Axis label rendering
  • colors.js - Color scheme definition
  • data.csv - RIAA US music revenue data

Dataset

The dataset (data.csv) contains US music industry revenue data by format from 1973 to 2019. It was downloaded from https://www.nic.uoregon.edu/~khuck/d3/d3-7.9.0/docs/public/data/ (filename: riaa-us-revenue.csv).

The data is sourced from the Recording Industry Association of America (RIAA) at https://www.riaa.com/.

Data Format

The CSV contains the following columns:

  • format - Music format (e.g., "CD", "8 - Track", "Cassette", "Download Single", "Streaming")
  • group - Format category (e.g., "Disc", "Tape", "Download", "Streaming")
  • year - Date in YYYY-MM-DD format (always January 1st of the year)
  • revenue - Revenue in millions of dollars (inflation-adjusted)

The dataset tracks the evolution of music consumption formats and their respective revenue contributions over nearly five decades, showing the rise and fall of physical media, the digital download era, and the emergence of streaming services.

MIT Licensed

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