geojson-random
Generate random GeoJSON features.
Usable in node.js and in browsers with browserify.
npm install -g geojson-random
geojson-random
# special fast-mode for points
geojson-random 10000 point-stream
api
var random = require('geojson-random');
random.point(count, bbox)
Return count
points wrapped in a FeatureCollection.
An optional bbox
parameter should be an array of numbers representing a bbox in WSEN order, and if given, the point will reside within its bounds.
random.position(bbox?)
Return a single GeoJSON Position as a 2-element array of numbers in longitude, latitude order.
An optional bbox
parameter should be an array of numbers representing a bbox in WSEN order, and if given, the position will reside within its bounds.
random.polygon(count, num_vertices, max_radial_length, bbox)
Return count
polygons wrapped in a FeatureCollection.
num_vertices
is default10
and is how many coordinates each Polygon will contain.max_radial_length
is the maximum number of decimal degrees latitude or longitude that a vertex can reach out of the center of the Polygon. Default is10
.bbox
(Optional) Bounding box in [minX, minY, maxX, maxY] order.
random.lineString(count, num_vertices, max_length, max_rotation, bbox)
Return count
line strings wrapped in a FeatureCollection.
num_vertices
is default10
and is how many coordinates each LineString will contain.max_length
is the maximum number of decimal degrees that a vertex can be from its predecessor Default is0.0001
.max_rotation
is the maximum number of radians that a line segment can turn from the previous segment. Default isMath.PI / 8
.bbox
(Optional) Bounding box in [minX, minY, maxX, maxY] order. This parameter is only applied to the starting point of the line.