GPXParser.js

GPXParser.js is a lightweight JS library wich parse .gpx file and get or compute various datas like

• GPX metadata
• total and cumulate distances
• min, max, average, positive and negative height différence

GPX ? What is this ?

Wikipedia say :

GPX, or GPS Exchange Format, is an XML schema designed as a common GPS data format for software applications.

gpx files are based on xml with specific tags and attributes

For more information about gpx format see http://www.topografix.com/gpx_manual.asp

How to do

Install from npm

npm install --save gpxparser

Load JavaScript file

From an HTML document :

<script src="./js/GPXParser.js"></script>

From a node.js script :

let gpxParser = require('gpxparser');

Create and parse file

var gpx = new gpxParser(); //Create gpxParser Object
gpx.parse("<xml><gpx></gpx></xml>"); //parse gpx file from string data

Use the gpx Object

var totalDistance = gpx.tracks[0].distance.total;

Export gpxParser Objecto to GeoJSON

let geoJSON = gpx.toGeoJSON();

Documentation

| Property | Type | Description| | ------------- | ------------- | ------------- | | xmlSource | XML | XML Object parsed from gpx string file | | metadata | Metadata object | File metadata | | waypoints | Array of Waypoint object | Array of waypoints | | tracks | Array of Track object | Array of waypoints of tracks | | routes | Array of Route object | Array of waypoints of routes |

Metadata object

| Property | Type | Description | | -------- | ------ | ----------------- | | name | String | File name | | desc | String | Description | | link | Link object | Web address | | author | Float | Author object | | time | DateTime | Time |

Waypoint object

| Property | Type | Description | | -------- | ------ | ----------------- | | name | String | Point name | | cmt | String | Comment | | desc | String | Point description | | lat | Float | Point latitute | | lon | Float | Point longitude | | ele | Float | Point elevation | | time | Date | Point time |

Track object

| Property | Type | Description | | -------- | ------ | ----------------- | | name | String | Point name | | cmt | String | Comment | | desc | String | Point description | | src | String | Used device | | number | String | Track identifier | | link | String | Link to a web address | | type | String | Track type | | points | Array | Points object array | | distance | Distance Object | Distance informations about the Route | | elevation | Elevation Object | Elevation informations about the Route | | slopes | Float Array | Slope of each sub-segment|

Route object

| Property | Type | Description | | -------- | ------ | ----------------- | | name | String | Point name | | cmt | String | Comment | | desc | String | Point description | | src | String | Used device | | number | String | Track identifier | | link | String | Link to a web address | | type | String | Route type | | points | Array | Points object array | | distance | Distance Object | Distance informations about the Route | | elevation | Elevation Object | Elevation informations about the Route | | slopes | Float Array | Slope of each sub-segment|

Point object

| Property | Type | Description | | -------- | ------ | ----------------- | | lat | Float | Point latitute | | lon | Float | Point longitude | | ele | Float | Point elevation | | time | Date | Point time |

Distance object

| Property | Type | Description | | -------- | ------ | ----------------- | | total | Float | Total distance of the Route/Track | | cumul | Float | Cumulative distance at each point of the Route/Track |

Elevation object

| Property | Type | Description | | -------- | ------ | ----------------- | | max | Float | Maximum elevation | | min | Float | Minimum elevation | | pos | Float | Positive elevation difference | | neg | Float | Negative elevation difference | | avg | Float | Average elevation |

Author object

| Property | Type | Description | | -------- | ------ | ----------------- | | name | String | Author name | | email | Email object | Email address of the author | | link | Link object | Web address |

Email object

| Property | Type | Description | | -------- | ------ | ----------------- | | id | String | Email id | | domain | String | Email domain |

Link object

| Property | Type | Description | | -------- | ------ | ----------------- | | href | String | Web address | | text | String | Link text | | type | String | Link type |