linematch
A super-fast algorithm for matching two sets of polylines and showing the difference. Primarily used for comparing road networks from different datasets.
Given arrays a
and b
, like linematch(a, b, 0.001)
, linematch will return a new
array that contains all segments in a
that are not matched with segments in b
.
If the arrays match exactly, the returned value will be an empty array, []
.
// given two arrays of linestrings and a threshold value,// outputs a difference as an array of linestringsvar result = ;