Coordinates¶
Systems¶
Notations¶
Tranformations¶
- Projections (distance and bearing)
- Centroid (center of gravity)
- Lines Middle of a line Intersection of lines
- Circles and lines
- Circles intersections (3 circles to get a unique waypoint)
- Antipodes
- Compute coordinates on great circles
- Vicenty formulae
- FizzyCalc
Units of length¶
- Imperial inches, feet, yards, miles, chain, furlong, league, fathom, cable, nautical mile
- Metric Also used in UTM system
- Ancient units
- Egypte: finger, palm, hand, fist, span, cubit, rod, iteru
- Rome: foot (pes), cubit, step, pace, stadium, mile, league
- Unusual units smoot, sheppey, parsec, …