Pyramid plot
A pyramid plot is a visualization that compares distributions across ordered categories using opposing or stacked bars or shapes.
D3.js in Action, Third Edition
A pyramid chart is a distribution chart that compares two distributions side by side using opposing or adjacent shapes.
- How it is used
- Compares two categorical distributions side by side across shared value brackets.
- How deep it goes
- Builds the chart with bins, separate scales, and proportional marks, but defers detailed implementation beyond focused construction guidance.
- Examples
- Uses salary distributions by gender and age distributions by gender, with bars, lollipops, and dumbbells.
- What you can do after
- Build it from scratch with D3 by binning two datasets and mapping their percentages to opposing chart halves.
Read how D3.js in Action, Third Edition explains pyramid plot →
Statistics Slam Dunk
A pyramid plot is a visualization that uses mirrored or stacked horizontal bars to compare distributions across ordered categories.
- How it is used
- Compares real and adjusted NBA salary-cap values across seasons using mirrored horizontal bars.
- How deep it goes
- Explains sign conversion, reshaping, axis labeling, and ggplot2 construction, stopping short of statistical modeling.
- Examples
- Uses NBA seasons, real dollars, adjusted dollars, mirrored bars, and million-dollar axis labels.
- What you can do after
- Build it from scratch in R by transforming paired measures and plotting them with ggplot2.
Related concepts
- d3.bin()uses · d3.bin() is a D3-array function that groups numeric values into bins according to a configured domain, thresholds, and value accessor.
- histogramhas part · A histogram is a representation that groups observations into bins or value ranges and records their frequencies or other distribution summaries.
- bar chartalternative to · A bar chart is a visualization that compares quantitative values for discrete categories using rectangular bars whose lengths or heights encode magnitude.
- dimensionhas part · A dimension is an independent coordinate, measurable axis, or descriptive attribute used to represent, locate, or analyze something.
- proportionuses · A proportion is a ratio expressing a part or quantity relative to a whole or reference quantity, commonly represented as a fraction, decimal, or percentage.
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