# jmforsythe/Git-Heat-Map

Visualise a git repository by diff activity

Repository: https://github.com/jmforsythe/Git-Heat-Map
Canonical: https://ross.abutalabs.com/products/git-heat-map
Homepage: http://heatmap.jonathanforsythe.co.uk
Language: JavaScript
License Family: other
Topics: git, treemap, database, python
Last push: 2024-09-27T17:09:58+00:00

## Health v2 (maintenance only)
Score: 31/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 96
- inputs: {"age_days": 1356, "days_push": 705, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1030, forks 41 (observed 2026-08-28T04:03:17.897758+00:00)

## What it is
A tool that visualizes a git repository as an interactive SVG treemap, where file sizes reflect diff activity (lines added/removed). It parses git history into a SQLite database and serves a Flask web app for filtering by author, commit, filename, and date range.

## Use cases
- visualize which files changed the most in a git repository
- generate a treemap heatmap of git diff activity
- analyze which authors or commits touched which files
- explore codebase hotspots by file extension or date range
- create an SVG image of a repository's change history

## When to choose
- you want a visual, interactive treemap of git change activity
- you need to identify hotspots or most-modified files in a large repo
- you want to filter history by author, email, filename, or date range

## When to avoid
- you need line-by-line code diffs rather than aggregate activity
- you want commit graphs or branch topology visualization (use gitk or Gource instead)
- you need a supported license for commercial redistribution (none is provided)

## Facets
- artifact type: application
- maturity: active
- function: data-visualization, charts, http-server, database, search-engine
- domain: developer-tools, version-control, data-visualization, analytics
- platform: python, self-hosted, cross-platform, cli
- tags: git, treemap, svg, flask, sqlite, git-analytics, code-visualization, heatmap, web-server

## Member repositories
- jmforsythe/Git-Heat-Map (main) score 31

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:17.897758+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:07:33.973935+00:00, confidence not recorded.
  - readme: https://github.com/jmforsythe/Git-Heat-Map (fetched 2026-08-28T04:03:17.897758+00:00, sha d69364641439)
  - homepage: http://heatmap.jonathanforsythe.co.uk (fetched 2026-08-29T13:07:04.895907+00:00, sha 4baef2723040)
- Data as of 2026-08-30T08:39:29.467469+00:00.