Turf offers a rich set of geometric operations, but it works with GeoJSON inputs. This library bridges a subset of turf operations (that might steadily grow) to allow the user to apply the same operations to google maps objects such as Polygons, Polylines and Markers.
Most of these methods return a GeoJSON feature, given the output of these geometric operations might not be suitable for conversion to a google maps object (which is the case of MultiPolygons or MultiLinestring). Some of them accept an
output parameter that, if passed
object as value, will try to return
a google maps object using Wicket.
In future releases, we might consider returning MultiGeometries or FeatureCollections as an instance of a google.maps.Data layer. We have avoided said functionality in the current release.
Install it with
npm install turf-google-maps
Or, if you're using JSPM
jspm install npm:turf-google-maps
main script as defined in
package.json is an UMD module. If you're using ES6 syntax, you might import individual
Which might help you perform some tree shaking in your build stage.
Takes a google.maps.Polyline and returns a Feature of type Point at a specified distance along the line.
Takes a set of gooogle.maps.LatLng or google.maps.LatLngLiteral and returns a concave hull Feature of type Polygon or MultiPolygon
Different helper methods to transform gooogle.maps.LatLng or google.maps.LatLngLiteral to GeoJSON positions or viceversa
Takes a google.maps.Polygon and returns a FeatureCollection of Points representing the polygon self intersections
Takes a google.maps.Polygon or google.maps.Polyline and returns a simplified version given a certain tolerance. Uses Douglas-Peucker algorithm
Takes two google.maps.Polyline and returns an array of coordinates [path of trimmed polyline1, path of trimmed polyline2, intersection point]
Operations to obtain the union, intersection of buffers of google.maps.Polygon objects
Takes a google.maps.Polygon with self intersections and returns a FeatureCollection of polygons without self intersections
Several utility functions to transform back and forth google.maps objects and Feature of their corresponding type