Pinkxa / geolib-experiments

Getting to know geolib

Geolib experiments

Use the supplied geolocations in locations.json to experiment with geolib.

Take a look at the geolib module on GitHub.

Setup

In the Browser

Be sure to reference it before you use it:

<!-- be sure the src path is correct -->
<script src="geolib.min.js" charset="utf-8"></script>

In Node

Install the module like this:

npm install geolib --save

The --save adds it to your package.json. If you don't have one already, you can use npm init to add one.

Usage examples

The geolib functions returns results like this:

geolib.getSpeed(
    {lat: 51.567294, lng: 7.38896, time: 1360231200880},
    {lat: 52.54944, lng: 13.468509, time: 1360245600880},
    {unit: 'mph'}
);
// -> 66.9408 (mph)

You should use the results of the function:

var speed = geolib.getSpeed(
    {lat: 51.567294, lng: 7.38896, time: 1360231200880},
    {lat: 52.54944, lng: 13.468509, time: 1360245600880},
    {unit: 'mph'}
);
// -> 66.9408 (mph)

console.log(speed);

Client-side example

Use the supplied app.js file to experiment with geolib in the browser. All the references are set up correctly in the index.html file.

There are two utility functions:

• one to handle displaying text in the results div called print
• one to handle button click button events called clickButton.

Functionality to try:

• Distance between two locations
• The centre of a bunch of coordinates
• Is a point inside a polygon
• Order coordinates by distance
• Find the nearest location to you
• Get the speed
• Is the point inside circle