WTrack

 Features

Edit tools

• Step-by-step editing: Click on map to create new track points, move points by dragging them, and create intermediate points by clicking on grayed markers. Click on a marker to get detailed information about this track step, and get the option to delete it.
• Routing editing: Click on map to set the starting point and destination, the routing engine will automically compute the track following map constraints. Click on the route to create intermediate waypoints that you may drag around.
• Open and edit multi-segment tracks. Create and delete segments using the "+" and "-" icons in the edit tools. Use the "Join Segments" tool to combine all segments into a single one. Split a segment in two by clicking on the scissors () in a track point popup dialog.
• Reposition tracks or waypoints by dragging them over the map, to fix GPS recording issues.
• Create named waypoints: Click on map to set points of interest. Click on a waypoint to edit its name.
• 
  Unlimited UNDOs: In step-by-step or routing edit modes, the edit turns into Undo icon to revert last changes.
  

Statistics

Real-time statistic data about your track

• Distance: One way () and round-trip () lenght of the track
• Duration: Estimated duration (one way and round-trip) of the track itinary based on the activity type. WTracks comes with default activities and timings, but you can configure your own, see below
• Maximum and minimum altitudes of the track
• Cumulated climbing and descent heights

Activity editor

Define your own type of activity, which will be used to computes track duration.

• Several timing models: reference points, linear polynomial...
• Automatic computation from a reference recorded track
• Share and import personal activities

Personal map configuration

Configure the list of background maps in the top right selector

• Define your preferred map order
• Hide/Show maps of your choice
• Configure your own personal map (standard tile layers or WMS/WMTS, as well as overlays that are displayed on top of the background map)

Sharing

• Provides a shareable link to reopen current edited track anytime and anywhere
• Anonymous storage in the cloud
• Optional sharing of the background map
• Optional encryption in the cloud
• Link available as a QRCode for easy mobile capture

The simplest way to share a track is using the "Share" button from the File menu tab.

Altenatively, if your track file is available online, you can manually build a shareable URL using the following syntax:

https://opoto.github.io/wtracks/?url=<link to online track file>[&<option>=<value>]

where parameters are:

• url is a HTTPS URL to a GPX/KML/GEOJSON track file. Encode the URL if it contains ? or & or other special characters.
• map is the name of the map as is appears in the top-right map selecetor. Map name with special characters need to be encoded. In particular, space must be replaced by + sign.
• ext is the extension/type of the track to use for parsing it. By default the end of the URL will be considered as the extension of the file. If it is not one of '.gpx', '.geojson', or '.kml', define it using the 'ext' parameter.
• noproxy=true when access to the track URL requires credentials provided by your browser (e.g., being logged in to a remote server). This requires the server hosting the track to support cross-origin requests. If not set, the file will be loaded by a intermediate proxy, removing the cross-origin constraint, but without your credentials.

Example of shareable URL:

https://opoto.github.io/wtracks/?url=https://www.visugpx.com/download.php?id=1320934523&ext=gpx&map=Sigma+Cycle

Example with a shared Dropbox file

You can share WTracks links to your files hosted in Dropbox by copying the "view only" file link in Dropbox, and use it as the url parameter in the WTracks URL, replacing the trailing dl=0 by dl=1, and prefixing with the file type, such as ext=gpx parameter. For example:

https://opoto.github.io/wtracks/?ext=gpx&url=https://www.dropbox.com/s/koccudrs0b2ri2d/Everest%2C+May+1953+%28T.+Norgay%2C+E.+Hillary%29.gpx?dl=1

Compress

• Reduces file size
• Consumes less browser memory and processing, leading to faster editor execution
• Simplifies step-by-step track editing, by only keeping most relevant points

This tools looks at each point in a track, and measures its distance from the line between the previous and next points. If this distance is smaller than the configurable value (default is 5 meters) then the point is deleted. Note that distances are taking into account the elevation: the distance between 2 points separated by 1 meter in a flat line will be measured as 1.41 meters if they have 1 meter elevation difference (square root of (1²+1²).

Optionally you can also define the maximum gap in time or distance that compression should not create between 2 points.

Elevate / Cleanup

Performs bulk operations on track points' elevation:

• Elevate computes the elevation of each point of the track. If an elevation value was already stored, it is overridden with new computed value. To minimize the elevation service consumption, we limit the number of computed elevation values to 512 per track.
• Cleanup selectively deletes each track point's elevation and time data.

WTracks uses external elevation service from third parties. You need to configure your personal API keys to get this feature.

You can display a graphical interactive height profile of your track by clicking on the statistic table at the bottom of the map.

Revert

Inverts a track so that start point becomes the end point.

Trim

Trimming is an easy way to quickly delete track points at the beggining or at the end of your track. Select which end of the track you want to trim, then use the slider to define the number of points to remove. The map shows the result in real-time.