README

heligeo

A library for Isochrone (Time-Distance) Analysis, Routing and Geoprocessing like Union, Intersection, Point Buffer, Line Buffer, Point with in Polygon(return points with in polygon sepratly), line aliasing(get multiple line parallel to linestring at certain distances).

Isochrone
Route
Union
Intersection
PointBuffer
LineBuffer
PointWithInPolygon
AliasLinestring

About Heliware

Heliware is a Web-GL Powered Geo-Spatial Analytics Platform for developer ,analytics & data Scientist that provides GIS, Web Mapping, and spatial data science tools which help companies to get InSite in just few click using AI, Data Science & Advance Geo-Processing.For advance library requirements please contact rajan@heliware.co.in .

Installation

Node Module

npm install heligeo

CDN

<script src="https://unpkg.com/heligeo@1.0.7/dist/heligeo.js"></script>

Usage

Importing Module


import { Isochrone, Route, Union, Intersection, PointBuffer, LineBuffer, PointWithInPolygon, AliasLinestring } from heligeo

new Isochrone(params).loaded().then(res=>{
    console.log(res); // get your data here
})

OR


import * as Heligeo from 'heligeo'

new Heligeo.Isochrone(params).loaded().then(res=>{
    console.log(res); // get your data here
})

Cdn User


<script src="https://unpkg.com/heligeo@1.0.7/dist/heligeo.js"></script>

<script>
new Heligeo.Isochrone(params).loaded().then((d) => {
      console.log(d); // get your data here
    });
</script>

Direction

For using this libraray you need Api-Key, You can simply get it by signing up Heliware here.
Please use the following table for params deatils of different analysis :

Analysis Type	params	Example
Isochrone	(apikey,lat,long,mode)	('your-api-key',28.456,78.45567,'drive')
Route	(apikey,lnglats,mode)	new Route('your-api-key',[[88.3639, 22.5726],[72.8777, 19.076],...])
Union	(apikey,polygons)	('your-api-key',[poly_1,poly_2,...])
Intersection	(apikey,polygons)	('your-api-key',[poly_1,poly_2,...])
PointBuffer	(apikey,lnglats,radious)	('your-api-key',[[88.3639, 22.5726],[72.8777, 19.076],...],20)
LineBuffer	(apikey,linesCoordinates,radious)	('your-api-key',[[[88.3639, 22.5726],[88.4143, 22.5797],...],[[88.2636, 22.5958],[88.4789, 22.7248],...],...],20)
PointWithInPolygon	(apikey,points,polygons)	('your-api-key',Point_GeoJson,[poly_1,poly_2,...])
AliasLinestring	(apikey,line,distance,number)	('your-api-key',line_GeoJson,30,100)

For Isochrone & Route heligeo have mode param ie. transport-mode, You can selectet between 4 below mentined modes.
- drive
- walk
- bike
- cycling
For Union, Intersection & PointWithInPolygon polygons param is Array of FeatureCollection/Geojson Object thats contain a single Polygon Feature.


poly_1 = {
            type: "FeatureCollection",
            features: [
              {
                type: "Feature",
                geometry: {
                  type: "Polygon",
                  coordinates: [
                    [
                      [77.4029103817493, 28.36918941103731, 0.0],
                      [77.40184896262588, 28.3722403721131, 0.0],
                      [77.39922678901301, 28.37081966588294, 0.0], 
                      [77.40030856003351, 28.36816909494472, 0.0],
                      [74029103817493, 28.36918941103731, 0.0],
                    ],
                  ],
                },
              },
            ]
        }

For PointBuffer & LineBuffer radious param denotes distance for buffer in 'meter'.
For PointWithInPolygon points param is a FeatureCollection/Geojson Object thats contains multiple Point Feature.


Point_GeoJson = {
            type: "FeatureCollection",
            features: [
                {"type":"Feature","geometry":{"type":"Point","coordinates":[76.95513342,28.46301607]}},
                {"type":"Feature","geometry":{"type":"Point","coordinates":[76.58813342,28.64701607]}},
                {"type":"Feature","geometry":{"type":"Point","coordinates":[76.12413342,28.98601607]}},
            ]
        }

For AliasLinestring line param is a FeatureCollection/Geojson Object thats contains Single LineString Feature with two position coordinates only ie. a straight line. distance param is the distance in 'meter' by which every line will be seprated. number param is number of linestring you want in parallel to line.


line_GeoJson = {
            "type": "FeatureCollection",
            "features":[
                {
                    "type": "Feature",
                    "geometry":{
                        "type":"LineString",
                        "coordinates": [[88.3639,22.5726],[88.4143,22.5797]]
                    }
                }
                ]
        }

Usage no npm install needed!