nhatphongdo / geojson-rbush

GeoJSON implementation of RBush — a high-performance JavaScript R-tree-based 2D spatial index for points and rectangles

GeoJSON RBush

GeoJSON implementation of RBush — a high-performance JavaScript R-tree-based 2D spatial index for points and rectangles.

Install

npm

$ npm install --save geojson-rbush

API

Table of Contents

• rbush
• insert
• load
• remove
• clear
• search
• collides
• all
• toJSON
• fromJSON

rbush

GeoJSON implementation of RBush spatial index.

Parameters

• maxEntries number defines the maximum number of entries in a tree node. 9 (used by default) is a reasonable choice for most applications. Higher value means faster insertion and slower search, and vice versa. (optional, default 9)

Examples

var geojsonRbush = require('geojson-rbush').default;
var tree = geojsonRbush();

Returns RBush GeoJSON RBush

insert

insert

Parameters

• feature Feature insert single GeoJSON Feature

Examples

var poly = turf.polygon([[[-78, 41], [-67, 41], [-67, 48], [-78, 48], [-78, 41]]]);
tree.insert(poly)

Returns RBush GeoJSON RBush

load

load

Parameters

• features (FeatureCollection | Array<Feature>) load entire GeoJSON FeatureCollection

Examples

var polys = turf.polygons([
    [[[-78, 41], [-67, 41], [-67, 48], [-78, 48], [-78, 41]]],
    [[[-93, 32], [-83, 32], [-83, 39], [-93, 39], [-93, 32]]]
]);
tree.load(polys);

Returns RBush GeoJSON RBush

remove

remove

Parameters

• feature Feature remove single GeoJSON Feature
• equals Function Pass a custom equals function to compare by value for removal.

Examples

var poly = turf.polygon([[[-78, 41], [-67, 41], [-67, 48], [-78, 48], [-78, 41]]]);

tree.remove(poly);

Returns RBush GeoJSON RBush

clear

clear

Examples

tree.clear()

Returns RBush GeoJSON Rbush

search

search

Parameters

• geojson (BBox | FeatureCollection | Feature) search with GeoJSON

Examples

var poly = turf.polygon([[[-78, 41], [-67, 41], [-67, 48], [-78, 48], [-78, 41]]]);

tree.search(poly);

Returns FeatureCollection all features that intersects with the given GeoJSON.

collides

collides

Parameters

• geojson (BBox | FeatureCollection | Feature) collides with GeoJSON

Examples

var poly = turf.polygon([[[-78, 41], [-67, 41], [-67, 48], [-78, 48], [-78, 41]]]);

tree.collides(poly);

Returns boolean true if there are any items intersecting the given GeoJSON, otherwise false.

all

all

Examples

tree.all()

Returns FeatureCollection all the features in RBush

toJSON

toJSON

Examples

var exported = tree.toJSON()

Returns any export data as JSON object

fromJSON

fromJSON

Parameters

• json any import previously exported data

Examples

var exported = {
  "children": [
    {
      "type": "Feature",
      "geometry": {
        "type": "Point",
        "coordinates": [110, 50]
      },
      "properties": {},
      "bbox": [110, 50, 110, 50]
    }
  ],
  "height": 1,
  "leaf": true,
  "minX": 110,
  "minY": 50,
  "maxX": 110,
  "maxY": 50
}
tree.fromJSON(exported)

Returns RBush GeoJSON RBush