Oalley javascript API

Oalley.js is a simple library for using Oalley API in nodejs and browser.

Library can compute isochrone and isodistance area and can filter data inside those area.

Install

Nodejs

npm install oalley.js

Browser

Include dist/oalley.min.js in your code like:

  <script src="../dist/oalley.js"></script>

Docs

Set the library with your api key :

let oalley = new Oalley('YOUR-API-KEY')

Each function of the library take a configuration object :

let config = {
  'mode': Transport Mode
  'duration': Travel duration in seconds (only for isochrone)
  'distance': Travel distance in meters (only for isodistance)
  'lat': Latitude of the center of the isoarea
  'lng': Longitude of the center of the isoarea
}

Simple example of a isochrone configuration :

let config = {
  'mode': 'car',
  'duration': 3600,
  'lat': 43.60,
  'lng': 1.441
}

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List of methods:

• oalley.isochrone(config, cb): Compute isochrone area
• oalley.isodistance(config, cb): Compute isodistance area
• oalley.isochroneFilter(config, dataset, cb): Return data which are in the isochrone area (for dataset see Filtering data inside isoarea section)
• oalley.isodistanceFilter(config, dataset, cb): Return data which are in the isodistance area (for dataset see Filtering data inside isoarea section)

Filtering data inside isoarea

The library can filter geodata inside an isochrone or an isodistance with the isochroneFilter and isodistanceFilter. In order to do that a dataset is passed to these methods representing a list of dictionary. Each element of the dictionary have to contain at least lat and lng keys.

Here below a simple example of a dataset:

let dataset = [{
  'lat': 43.60,
  'lng': 1.441,
  'mydata': 42
},
{
  'lat': 33.60,
  'lng': 2.441,
  'mydata': 24
}
]

Examples

All examples are available in the examples folder.

** Do not forget to set your API Key **

A nodejs example is available in the file node-example.js

A browser example is available in the file browser-example.html