googollee/eviltransform
Transport coordinate between earth(WGS-84) and mars in china(GCJ-02). observed · 2026-08-28
Health v2 · maintenance only
32/100
- Activity 0
- Release rhythm 35
- Longevity 100
Flags: no_releases no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4727
- days_rel: n/a
- days_push: 962
- n_releases_24m: 0
Adoption not part of the score
2590 stars · 476 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
A multi-language library that converts coordinates between WGS-84 (GPS) and GCJ-02 (the offset coordinate system used by Chinese map services like Google Maps China and Autonavi). It also provides distance calculation between points.
Use cases
- convert GPS coordinates to Chinese map coordinates
- fix offset between GPS points and China map tiles
- convert GCJ-02 coordinates back to WGS-84
- calculate distance between two lat/lng points in meters
- align GPS tracks with Amap or Google Maps China
When to choose
- your app mixes GPS data with Chinese map services like Google Maps China or Autonavi
- you need WGS-84 to GCJ-02 conversion in one of many supported languages
- you need sub-meter accuracy reverse conversion via the exact algorithm
When to avoid
- you work entirely outside China and never touch GCJ-02 coordinates
- you need Baidu BD-09 conversion directly (only GCJ-02 is handled)
- you need full geospatial processing beyond simple coordinate transforms
Facets
library · maturity maintenance
geospatial math cross-platform go python php cpp dotnet gcj-02 wgs-84 coordinate-conversion china-maps gps-offset maps geospatial china javascript haskell matlab
1 source
- readme: https://github.com/googollee/eviltransform · fetched 2026-08-28 · 27c2ad19b769
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| googollee/eviltransform | main | 32 |
For agents
markdown · JSON · MCP: product_card(name="googollee/eviltransform")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem