ol-ext

Namespace: LineString

ol.geom. LineString

Linestring geometry.

See:

Methods

sampleAt(d)

Sample a LineString at a distance

Parameters:
Name Type Description
d number
Returns:
Type
ol.geom.LineString

simplifyVisvalingam(options [, area] [, dist] [, ratio] [, minPoints] [, keepEnds])

Visvalingam polyline simplification algorithm, adapted from http://bost.ocks.org/mike/simplify/simplify.js This uses the Visvalingam–Whyatt algorithm.

Parameters:
Name Type Argument Default Description
options Object
area number <optional>

the tolerance area for simplification
dist number <optional>

a tolerance distance for simplification
ratio number <optional>
 .8

a ratio of points to keep
minPoints number <optional>
 2

minimum number of points to keep
keepEnds boolean <optional>

keep line ends
Returns:

A new, simplified version of the original geometry.

Type
LineString

splitAt(pt, tol)

Split a lineString by a point or a list of points NB: points must be on the line, use getClosestPoint() to get one

Parameters:
Name Type Description
pt ol.Coordinate | Array.<ol.Coordinate>

points to split the line
tol Number

distance tolerance for 2 points to be equal