Blockchain & Cryptocurrency Glossary

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Heatmap

1 min read
Pronunciation
[heet-map]
Analogy
Like a weather map using colors to show temperature variations across a region.
Definition
A data visualization that displays values in a matrix or geographical layout using color gradients to indicate intensity, often used to show transaction volume, gas prices, or network activity hotspots.
Key Points Intro
Heatmaps reveal patterns and outliers in large blockchain datasets at a glance.
Key Points

Color scale: Maps numeric ranges to gradient colors.

Granularity: Defines cell size by block interval or address cluster.

Interactive: Hover to see exact values and filter dimensions.

Time series: Animate heatmaps over time to show dynamics.

Example
A dashboard shows a heatmap of gas price spikes by hour and day of week, helping users choose low‑fee windows.
Technical Deep Dive
Data pipeline aggregates metrics into buckets (e.g., block ranges vs gas price percentiles). Frontend uses D3.js to render an SVG or canvas grid with color interpolation. Legends map colors to value ranges.
Security Warning
Color perception varies; ensure accessibility with annotations and alternative text.
Caveat
Heatmaps can obscure exact values; supplement with tooltips or numeric tables.

Heatmap - Related Articles

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