# markmarkoh/datamaps

Customizable SVG map visualizations for the web in a single Javascript file using D3.js

Repository: https://github.com/markmarkoh/datamaps
Canonical: https://ross.abutalabs.com/products/datamaps
Homepage: http://datamaps.github.io
Language: JavaScript
License: MIT
License Family: permissive
Last push: 2026-02-10T21:28:39+00:00

## Health v2 (maintenance only)
Score: 52/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 66, release rhythm 8, longevity 100
- inputs: {"age_days": 5044, "days_push": 204, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3799, forks 998 (observed 2026-08-28T04:08:20.097896+00:00)

## What it is
Datamaps is a JavaScript library for creating customizable, interactive SVG map visualizations (choropleths, bubble maps, arcs) bundled into a single script file built on D3.js and Topojson. It scales to any screen size and supports custom map data and plugins for additional visualization types.

## Use cases
- render a world choropleth map colored by country data
- show bubble markers on a USA map for city-level metrics
- draw arcs between geographic points on a map
- embed an interactive scalable SVG map in a web dashboard
- create custom map visualizations with a plugin system
- animate geographic data over time on a map

## When to choose
- you need lightweight, dependency-simple SVG maps in a single JS file
- you want choropleth or bubble maps without a full mapping framework
- you need maps that scale responsively in the browser
- you want to extend maps with custom visualization plugins

## When to avoid
- you need street-level or tile-based maps like Leaflet or Mapbox
- you need actively developed features or timely bug fixes
- you need WebGL performance for very large datasets
- you need built-in support for scopes beyond world/USA without custom map data

## Facets
- artifact type: library
- maturity: maintenance
- function: data-visualization, charts, plugin-system
- domain: data-visualization, web-development, frontend
- platform: browser
- tags: svg, d3js, choropleth, bubble-map, topojson, geographic-maps, single-file, maps, nodejs, web-server

## Member repositories
- markmarkoh/datamaps (main) score 52

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:20.097896+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 2026-08-29T18:26:54.499578+00:00, confidence not recorded.
  - readme: https://github.com/markmarkoh/datamaps (fetched 2026-08-28T04:08:20.097896+00:00, sha 04da635f5047)
  - homepage: http://datamaps.github.io (fetched 2026-08-29T09:21:59.378696+00:00, sha 9af5ea11eda8)
  - registry_npm: https://registry.npmjs.org/datamaps (fetched 2026-08-29T09:21:59.387872+00:00, sha e7620dfb09f1)
- Data as of 2026-08-30T08:39:29.467469+00:00.