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Chornica Mobilis server and map visualization
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Chronica Mobilis

Location server and map visualization platform for Chronica Mobilis project.


  • node 0.10.x
  • npm 1.5.x


Install dependencies:

$ npm install

Run application:

$ npm start


Ground user setup

Use Self-Hosted GPS Tracker Android app and set URL to your application:


Access data at http://localhost:8000/data

Start a new CSV base by accessing http://localhost:8000/reset

Visualize tracking

Access http://localhost:8000 to view a map with updated locations from the last navigation

Customize visualization interaction

Chronica Mobilis visualization has several features to customize and interact with the visualization. You can see an example by looking at how our front-end app is initialized here

Here's a more detailed explanation on how it works:

Initialize the app

Get the library and init a visualization with default options:

var cm = require('./cm');
var map = cm();

Deploy changes

After you change the code in the src directory, you'll need to deploy running this on your terminal:

$ npm run build

To watch for changes and deploy automatically, run this:

npm run watch

Both scripts are shortcuts to execute grunt.


cm receives an object with options. Returns a L.Map so you can customize the map all you want.

Example with custom tiles:

var options = {
	tiles: 'http://custom.tile.url/{z}/{x}/{y}.png'
var map = cm(options);

Basic options

  • mapContainer: string - ID for the map container (default is map)
  • tiles: string - custom tiles url (default is http://{s}{z}/{x}/{y}.png)
  • zoom: number - default map zoom (default is 2)
  • center: array - default map center (default is [0,0])
  • interval: number - interval in seconds to look for new locations (default is 5)
  • markers: boolean - true if you want to display markers on user locations (default is true)

Layers options

Location data can be displayed as markers and lines. You can set custom default options or specific user options to display these layers.

Check Leaflet documentation on available Markers and PolyLine options.


var options = {};

options.layerOptions = {
	'default': {
		line: {
			color: '#333'
		marker: {
			// marker options goes here
	'someuser': {
		line: {
			color: '#fff'
		marker: {
			// marker options goes here

var map = cm(options);


Discoveries are callback functions that can be executed when a ground user pass close to a determined location.


  • user: string - specify if this callback should be executed to a specific user (optional)
  • coords: array - determined location in latitude and longitude coordinates (required)
  • distance: number - maximum distance radius in meters (optional, default is 20)
  • init: boolean - set true if it should be executed on page load if the user has already passed by this location (optional)
  • callback: function (required)


var options = {};

options.discoveries = [
		user: 'someuser',
		coords: [1,1],
		init: true,
		callback: function(pos) {
			 * Magic goes here
			 * Receives an object with user, coords, and date
		coords: [-54,13],
		distance: 5,
		callback: function(pos) {
			alert('someone very close from here!');

var map = cm(options);

Further development

If you'd like to create new features connected to your map, use Leaflet documentation to work on the L.Map object returned by the cm constructor.

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