@turf/great-circle
greatCircle
Calculate great circles routes as LineString
Parameters
start
(Geometry | Feature<Point> | Array<number>) source point featureend
(Geometry | Feature<Point> | Array<number>) destination point featureproperties
[Object] line feature properties (optional, default {}
)npoints
[number] number of points (optional, default 100
)offset
[number] offset controls the likelyhood that lines will
be split which cross the dateline. The higher the number the more likely. (optional, default 10
)
Examples
var start = turf.point([-122, 48]);
var end = turf.point([-77, 39]);
var greatCircle = turf.greatCircle(start, end, {'name': 'Seattle to DC'});
var addToMap = [start, end, greatCircle]
Returns Feature<LineString> great circle line feature
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.
Installation
Install this module individually:
$ npm install @turf/great-circle
Or install the Turf module that includes it as a function:
$ npm install @turf/turf
4.7.0
🚀 New Modules
[@turf/projection
][projection]
- toMercator: Converts a WGS84 GeoJSON object into Mercator (EPSG:900913) projection
- toWgs84: Converts a Mercator (EPSG:900913) GeoJSON object into WGS84 projection
(PR https://github.com/Turfjs/turf/pull/927 - Author @stebogit)
[@turf/point-to-line-distance
][point-to-line-distance]
Returns the minimum distance between a {@link Point} and a {@link LineString}, being the distance from a line the minimum distance between the point and any segment of the LineString
.
(PR https://github.com/Turfjs/turf/pull/925 - Author @stebogit)
[@turf/boolean-within
][boolean-within]
Boolean-within returns true if the first geometry is completely within the second geometry. The interiors of both geometries must intersect and, the interior and boundary of the primary (geometry a) must not intersect the exterior of the secondary (geometry b). Boolean-within returns the exact opposite result of the [@turf/boolean-contains
][boolean-contains].
(PR https://github.com/Turfjs/turf/pull/924 - Author @rowanwins)
🏅 New Features/Enhancements
- Updates [
@turf/unkink-polygon
][unkink-polygon] testing & added flattenEach
instead of using flatten
.
(PR https://github.com/Turfjs/turf/pull/889) - [
@turf/concave
][concave] refactoring, replacing [@turf/union
][union] with geojson-dissolve
to increase speed and added support to null
geometries
(PR https://github.com/Turfjs/turf/pull/907 - Contributor @stebogit @DenisCarriere) - Adds doc note on [
@turf/polygonize
][polygonize] about "Edges must be correctly noded"
(PR https://github.com/Turfjs/turf/pull/898 - Contributor @stebogit @NickCis) - Adds support to foreign Members to [
@turf/clone
][clone]
(PR https://github.com/Turfjs/turf/pull/904 - Contributor @DenisCarriere) - Extends support of any
GeoJSON
to [@turf/simplify
][simplify]
(PR https://github.com/Turfjs/turf/pull/903 - Contributor @DenisCarriere @stebogit) - Adds new
isNumber
function and improves type checking for few [@turf/helpers
][helpers] methods
(PR https://github.com/Turfjs/turf/pull/920 - Contributor @DenisCarriere @stebogit) - Adds throw errors to invalid
MultiPolygons
for [@turf/simplify
][simplify]
(PR https://github.com/Turfjs/turf/pull/922 - Contributor @DenisCarriere)
🐛 Bug Fixes
- Fixes
@turf/bbox-clip
point intersection handling, adding sanity-checks the lineclip output
(PR https://github.com/Turfjs/turf/pull/886) - Fixes [
@turf/line-split
][line-split] endpoint case handling applying [@turf/truncate
][truncate] on splitter
(PR https://github.com/Turfjs/turf/pull/892 and https://github.com/Turfjs/turf/pull/855 - Contributor @stebogit) - Fixes [
@turf/intersect
][intersect] throwing "uncaught exception", adding [@turf/truncate
][truncate] to inputs and returning Feature<null>
if no geometry
(PR https://github.com/Turfjs/turf/pull/890 - Contributor @stebogit @vicvolk) - Fixes [
@turf/hex-grid
][hex-grid] not properly cloning the last ring vertex
(PR https://github.com/Turfjs/turf/pull/897 - Contributor @stebogit @DenisCarriere) - Fixes [
@turf/boolean-disjoint
][boolean-disjoint] incorrect behaviour where a poly was completely contained within another poly
(PR https://github.com/Turfjs/turf/pull/908 - Contributor @rowanwins) - Fixes [
@turf/simplify
][simplify] process pending on particular geometries, applying [@turf/clean-coords
][clean-coords] to input.
(PR https://github.com/Turfjs/turf/pull/903 - Contributor @stebogit @DenisCarriere) - Fixes
boolean
properties not being translated with [@turf/clone
][clone]
(PR https://github.com/Turfjs/turf/pull/909 - Contributor @DenisCarriere) - Fixes [
@turf/boolean-contains
][boolean-contains] incorrect output when checking two polygons
(PR https://github.com/Turfjs/turf/pull/923 - Contributor @rowanwins @DenisCarriere)