Determine if Shapely point is within a LineString/MultiLineString

Question

I am trying to use Shapely\'s within function to do a \'spatial join\' of a LineString and a Point file (FYI, the point file was generated using the inter

Answer 1

There are floating point precision errors when finding a point on a line. Use the distance with an appropriate threshold instead.

from shapely.geometry import Point, LineString

line = LineString([(-9765787.9981184918, 5488940.9749489054), (-9748582.8016368076, 5488402.1275707092)])
point = Point(-9763788.9782693591, 5488878.3678984242)

line.within(point)  # False
line.distance(point)  # 7.765244949417793e-11
line.distance(point) < 1e-8  # True