Class: LineString

ol.geom.LineString

Linestring geometry.

new ol.geom.LineString(coordinates, opt_layout)

Name Type Description
coordinates Array.<ol.Coordinate>

Coordinates.

layout ol.geom.GeometryLayout

Layout.

Fires:
  • change - Triggered when the geometry changes.

Extends

Methods

appendCoordinate(coordinate)

Name Type Description
coordinate ol.Coordinate

Coordinate.

applyTransform(transformFn) inherited

Apply a transform function to the geometry. Modifies the geometry in place. If you do not want the geometry modified in place, first clone() it and then use this function on the clone.

Name Type Description
transformFn ol.TransformFunction

Transform.

Make a complete copy of the geometry.

Returns:
Clone.

dispatchChangeEvent() inherited experimental

Dispatches a change event.

Fires:
  • change experimental

getClosestPoint(point, opt_closestPoint){ol.Coordinate} inherited

Name Type Description
point ol.Coordinate

Point.

closestPoint ol.Coordinate

Closest point.

Returns:
Closest point.

getCoordinateAtM(m, opt_extrapolate){ol.Coordinate}

Returns the coordinate at m using linear interpolation, or null if no such coordinate exists.

opt_extrapolate controls extrapolation beyond the range of Ms in the MultiLineString. If opt_extrapolate is true then Ms less than the first M will return the first coordinate and Ms greater than the last M will return the last coordinate.

Name Type Description
m number

M.

extrapolate boolean

Extrapolate.

Returns:
Coordinate.

getCoordinates(){Array.<ol.Coordinate>}

Returns:
Coordinates.

Get the extent of the geometry.

Name Type Description
extent ol.Extent

Extent.

Returns:
extent Extent.
Returns:
First coordinate.
Returns:
Last point.
Returns:
Layout.

getLength(){number}

Returns:
Length (on projected plane).

getRevision(){number} inherited experimental

Returns:
Revision.

Get the type of this geometry.

Returns:
Geometry type.

on(type, listener, opt_this){goog.events.Key} inherited

Listen for a certain type of event.

Name Type Description
type string | Array.<string>

The event type or array of event types.

listener function

The listener function.

this Object

The object to use as this in listener.

Returns:
Unique key for the listener.

once(type, listener, opt_this){goog.events.Key} inherited

Listen once for a certain type of event.

Name Type Description
type string | Array.<string>

The event type or array of event types.

listener function

The listener function.

this Object

The object to use as this in listener.

Returns:
Unique key for the listener.

setCoordinates(coordinates, opt_layout)

Name Type Description
coordinates Array.<ol.Coordinate>

Coordinates.

layout ol.geom.GeometryLayout

Layout.

transform(source, destination){ol.geom.Geometry} inherited

Transform a geometry from one coordinate reference system to another. Modifies the geometry in place. If you do not want the geometry modified in place, first clone() it and then use this function on the clone.

Name Type Description
source ol.proj.ProjectionLike

The current projection. Can be a string identifier or a ol.proj.Projection object.

destination ol.proj.ProjectionLike

The desired projection. Can be a string identifier or a ol.proj.Projection object.

Returns:
This geometry. Note that original geometry is modified in place.

un(type, listener, opt_this) inherited

Unlisten for a certain type of event.

Name Type Description
type string | Array.<string>

The event type or array of event types.

listener function

The listener function.

this Object

The object which was used as this by the listener.

Removes an event listener using the key returned by on() or once().

Name Type Description
key goog.events.Key

Key.