@turf/boolean-point-on-line
Advanced tools
@turf/boolean-point-on-line is a module from the Turf.js library that allows you to determine if a given point lies on a line. This can be useful for various geospatial analyses, such as validating routes, checking if a location is on a path, or any other scenario where you need to verify point-line relationships.
Check if a point is on a line
This feature allows you to check if a specific point lies on a given line. In the code sample, the point [2, 2] is checked against a line that passes through [1, 1], [3, 3], and [4, 4]. The result is true because the point lies on the line.
const turf = require('@turf/turf');
const point = turf.point([2, 2]);
const line = turf.lineString([[1, 1], [3, 3], [4, 4]]);
const isPointOnLine = turf.booleanPointOnLine(point, line);
console.log(isPointOnLine); // trueCheck if a point is on a line with a tolerance
This feature allows you to check if a point is on a line within a specified tolerance. In the code sample, the point [2, 2.1] is checked against the same line with a tolerance of 0.2. The result is true because the point is within the tolerance range of the line.
const turf = require('@turf/turf');
const point = turf.point([2, 2.1]);
const line = turf.lineString([[1, 1], [3, 3], [4, 4]]);
const isPointOnLine = turf.booleanPointOnLine(point, line, { tolerance: 0.2 });
console.log(isPointOnLine); // trueThe 'point-in-polygon' package allows you to check if a point is inside a polygon. While it doesn't check for points on lines, it is useful for similar geospatial analyses where you need to determine point-in-shape relationships.
The 'geolib' package provides a variety of geospatial functions, including checking if a point is on a line. It offers more general-purpose geospatial utilities compared to @turf/boolean-point-on-line, which is more specialized.
Leaflet is a popular library for interactive maps. While it is primarily used for rendering maps, it also provides some geospatial analysis functions, including checking if a point is on a line. It is more comprehensive in terms of mapping capabilities compared to @turf/boolean-point-on-line.
Returns true if a point is on a line. Accepts a optional parameter to ignore the start and end vertices of the linestring.
Parameters
pt Coord GeoJSON Pointline Feature<LineString> GeoJSON LineStringoptions Object Optional parameters (optional, default {})
options.ignoreEndVertices boolean whether to ignore the start and end vertices. (optional, default false)Examples
var pt = turf.point([0, 0]);
var line = turf.lineString([[-1, -1],[1, 1],[1.5, 2.2]]);
var isPointOnLine = turf.booleanPointOnLine(pt, line);
//=true
Returns boolean true/false
This module is part of the Turfjs project, an open source module collection dedicated to geographic algorithms. It is maintained in the Turfjs/turf repository, where you can create PRs and issues.
Install this module individually:
$ npm install @turf/boolean-point-on-line
Or install the Turf module that includes it as a function:
$ npm install @turf/turf
6.2.0
After a bit of hiatus, TurfJS is resuming releases.
@turf/boolean-touches][boolean-touches]Determines if two features touch but do not intersect
@turf/boolean-valid][boolean-valid]Checks if the geometry is a valid according to the OGC Simple Feature Specification
@turf/quadrat-analysis][quadrat-analysis]Performs a quadrat analysis on a set of points
@turf/rectangle-grid][rectangle-grid]Creates a grid of rectangles from a bounding box
@turf/voroni][voronoi]Typescript types for the options parameter have been fixed (PR https://github.com/Turfjs/turf/pull/1424 - Author @stevage)
@turf/points-within-polygon][points-within-polygon]Typescript types around the Feature's Properties will now be preserved. (PR https://github.com/Turfjs/turf/pull/1761 - Author @rugheid)
@turf/rewind][rewind]Typescript types for the 'reverse' option are now correct. Previously it was misnamed as 'reversed'. (PR https://github.com/Turfjs/turf/pull/1786 - Author @jonnycornwell)
@turf/difference][difference]No longer publishes an .mjs file.
@turf/meta][meta]No longer publishes an .mjs file.
@turf/tag][tag]Add MultiPolygon support. (PR https://github.com/Turfjs/turf/pull/1996 - Author bryceroney)
@turf/centroid Don't visit first point twice when calculating centroid
(PR https://github.com/Turfjs/turf/pull/1894 - Author @rowanwins)
@turf/transform-translate Better handling of negative distances
(PR https://github.com/Turfjs/turf/pull/1895 - Author @rowanwins)
@turf/union, @turf/difference, @turf/intersect Use polygon-clipping library to fix correctness issues
(PR https://github.com/Turfjs/turf/pull/1916 - Authors @mbullington, @ngottlieb)
@turf/buffer Change default number of steps to 8, and actually support the steps option
(PR https://github.com/Turfjs/turf/pull/1931 - Author stevenchanin)
@turf/buffer Fix projection issues that produce undersized buffers at non-equatorial latitudes
(PR https://github.com/Turfjs/turf/pull/1956 - Author dyakovlev)
@turf/helpers Add runtime checks to point() method, fixing an API break
(PR https://github.com/Turfjs/turf/pull/1964)
@turf/boolean-overlap Better performance for MultiPoint geometries
(PR https://github.com/Turfjs/turf/pull/1910 - Author @mfedderly)
@turf/helpers Add hectares to convertArea
(PR https://github.com/Turfjs/turf/pull/1943 - Author @DanielJDufour)
@turf/great-circle Update Typescript types to support MultiLineString input
(PR https://github.com/Turfjs/turf/pull/1928 - Author kronick)
@turf/square-grid Clarify inputs
(PR https://github.com/Turfjs/turf/pull/1885 - Author @raphael-leger)
@turf/greater-circle Clarify properties option example
(PR https://github.com/Turfjs/turf/pull/1888 - Author @chris-catignani)
@turf/line-to-polygon no longer modifies its input unless the mutate option is true
(PR https://github.com/Turfjs/turf/pull/1879 - Author @MortenBirk)
@turf/unkink-polygon remove Number.prototype.modulo override
(PR https://github.com/Turfjs/turf/pull/1978)
FAQs
turf boolean-point-on-line module
The npm package @turf/boolean-point-on-line receives a total of 0 weekly downloads. As such, @turf/boolean-point-on-line popularity was classified as not popular.
We found that @turf/boolean-point-on-line demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 9 open source maintainers collaborating on the project.
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