polyline-clean

Clean polyline or polygon data: remove duplicate, collinear, null points, etc.

const c = require('polyline-clean')
 
// remove duplicate, degenerate or collinear segments
c([[0,0], [null,null], [1,1], [1,1], [.5,.5], [1,1], [3,3]])
// === [[0,0], [3,3]]

c(coordinates, options?)

Return new coordinates array with bad points removed. If result is degenerate, null will be returned.

Option	Meaning
ids	Return indexes in the initial array instead of points.
fold	Collapse collinear segments. Can be a number indicating min angle threshold. polygon mode has more rigid folding. Useful to disable it when data has logarithmic fashion.
polygon	Apply polygon optimizations: remove coinciding end, collinear end segments, ignore degenerate results.

Related

• parse-poly − parse any polygon/polyline format and return list of coordinates.
• simplify-path − simplify polyline with tolerance.

License

(c) 2018 Dmitry Yv. MIT License