Rotates any geojson Feature or Geometry of a specified angle, around its centroid
or a given pivot
point.
-
geojson
GeoJSON object to be rotated -
angle
number of rotation in decimal degrees, positive clockwise -
options
Object Optional parameters (optional, default{}
)
var poly = turf.polygon([[[0,29],[3.5,29],[2.5,32],[0,29]]]);
var options = {pivot: [0, 25]};
var rotatedPoly = turf.transformRotate(poly, 10, options);
//addToMap
var addToMap = [poly, rotatedPoly];
rotatedPoly.properties = {stroke: '#F00', 'stroke-width': 4};
Returns GeoJSON the rotated GeoJSON 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.
Install this single module individually:
$ npm install @turf/transform-rotate
Or install the all-encompassing @turf/turf module that includes all modules as functions:
$ npm install @turf/turf