locationtech / locationtech/spatial4j
Implementing Utilities for Moving Between Lat/Long, Geocentric and Direction Cosine Points
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- Dominant language
- Java
- Stars
- 961
- Forks
- 172
- PR merge metrics
- No merged PRs in 30d
Description
Implement utility methods for easily moving between three coordinate systems or point representations:
- Geocentric: 3D point - vector from the origin (0, 0, 0) to point on the surface of a spheroidal model of the earth
- Geographic Point: Latitude/longitude
- Direction Cosine "Point": Unit Vector representation of the 3D point (or can also be derived from the 2D point)
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
No files, tests, or entry points are named in the issue. Start by locating the existing coordinate and point abstractions, then define the supported conversions and verify that the three representations convert consistently in both directions.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- data
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100