geojson-groupby
Group GeoJSON features or FeatureCollection based on associated properties and merge geometries to multigeometries.
installation
npm install geojson-groupby
usage
var geoGroupBy = var group = -
array Array of JSON objects
-
properties Array JSON properties' path like
address.cityor lookup objectlookup
{ intervals: array of numbers ,property: string [,labels: array of string] }intervals Array of intervals. Like [ 10, 20, 30, 40, 50] group the data in four ranges, whereas lower bound is inclusive and upper bound is exclusive.
peroperty Property path like
pricelabels Array of interval labels like [ 'low', 'medium', 'high']
-
collect Array of properties that need to be collected in array
examples
data set
var features = "id": 1 "geometry": "type": "Point" "coordinates": 10 10 "properties": "color": "blue""price": 150"address": "city": "New York" "id": 2 "geometry": "type": "Point" "coordinates": 20 20 "properties": "color": "green""price": 200"address": "city": "London" "id": 3 "geometry": "type": "Point" "coordinates": 30 30 "properties": "color": "red""price": 210"address": "city": "London" "id": 4 "geometry": "type": "Point" "coordinates": 40 40 "properties": "color": "red""price": 280"address": "city": "New York" "id": 5 "geometry": "type": "Point" "coordinates": 50 50 "properties": "color": "green""price": 300"address": "city": "New York" "id": 6 "geometry": "type": "Point" "coordinates": 60 60 "properties": "color": "red""price": 360"address": "city": "Mumbai" ``` ##### group features and merge geometries to multigeometries```javascript// output asblue: geometry: type: 'MultiPoint' coordinates: 10 10 green: geometry: type: 'MultiPoint' coordinates: 20 20 50 50 red: geometry: type: 'MultiPoint' coordinates: 30 30 40 40 60 60```##### group features, merge geometries to multigeometries and collect ids```javascript// output asblue: id: 1 geometry: type: 'MultiPoint' coordinates: 10 10 green: id: 2 5 geometry: type: 'MultiPoint' coordinates: 20 20 50 50 red: id: 3 4 6 geometry: type: 'MultiPoint' coordinates: 30 30 40 40 60 60 ``` This package `geojson-groupby` is based on [json-groupby](https://github.com/gagan-bansal/json-groupby), so please also check different [examples](https://github.com/gagan-bansal/json-groupby#examples) on usage of json-groupby ## developingOnce you run ```npm isntall``` then for running test ```npm run test``` to create build ```npm run build``` ## licenseThis project is licensed under the terms of the MIT license.