Leaflet.FileLayer

Loads local files (GeoJSON, JSON, GPX, KML) into the map using the HTML5 FileReader API, without server call !

• A simple map control
• The user can browse a file locally
• It is read locally (FileReader) and converted to GeoJSON
• And loaded as a layer eventually!

For GPX and KML files, it currently depends on Tom MacWright's togeojson.js.

Install

In order to use this plugin in your app you can either:

• install it via your favorite package manager:
  • npm i leaflet-filelayer
  • bower install git://github.com:makinacorpus/Leaflet.FileLayer.git
• download the repository and import the leaflet.filelayer.js file in your app.

Dependencies and compatibilities

In order to use this plugin, you need to have both leaflet and togeojson installed. If you're using Leaflet < 1, you need to use the version 0.6.0 of this plugin. After that, Leaflet > 1 is required.

Usage

    var map = L.map('map').fitWorld();
    ...
    L.Control.fileLayerLoad({
        // Allows you to use a customized version of L.geoJson.
        // For example if you are using the Proj4Leaflet leaflet plugin,
        // you can pass L.Proj.geoJson and load the files into the
        // L.Proj.GeoJson instead of the L.geoJson.
        layer: L.geoJson,
        // See http://leafletjs.com/reference.html#geojson-options
        layerOptions: {style: {color:'red'}},
        // Add to map after loading (default: true) ?
        addToMap: true,
        // File size limit in kb (default: 1024) ?
        fileSizeLimit: 1024,
        // Restrict accepted file formats (default: .geojson, .json, .kml, and .gpx) ?
        formats: [
            '.geojson',
            '.kml'
        ]
    }).addTo(map);

Events:

• data:loaded (event)

    var control = L.Control.fileLayerLoad();
    control.loader.on('data:loaded', function (event) {
        // event.layer gives you access to the layers you just uploaded!
        // event.data gives you the raw content of the file (or the data passed to loadData)

        // Add to map layer switcher
        layerswitcher.addOverlay(event.layer, event.filename);
    });

• data:error (error)

    var control = L.Control.fileLayerLoad();
    control.loader.on('data:error', function (error) {
        // Do something usefull with the error!
        console,error(error);
    });

Changelog

1.3.0

• Return the parsed data in the data:loaded event as event.data (#24, thanks mabhub)
• Accept file extensions in upper case (thanks eyal88)
• Report XML parsing errors instead of "GeoJSON has no valid layers." (thanks opoto)
• Stop click propagation on the whole control container (thanks TheoLechemia)

1.2.0

• Leaflet 1.2.0 compatibility
• Accept json file as input (thanks kkdd)

1.1.0

• Leaflet 1.1.0 compatibility (thanks @thorinii)

0.6.0

• Better plugin packaging and dependencies
• Adding bower support (thanks @george-silva)
• Adding support for custom geoJson layers (thanks @MuellerMatthew)
• Treating json files as geoJson (thanks @Jmuccigr)

0.5.0

• Load multiple files (thanks @jens-duttke)

0.4.0

• Support whitelist for file formats (thanks CJ Cenizal)

0.3.0

• Add data:error event (thanks @joeybaker)
• Fix multiple uploads (thanks @joeybaker)
• Add addToMap option (thanks @joeybaker)

(* Did not release version 0.2 to prevent conflicts with Joey's fork. *)

0.1.0

• Initial working version

Authors

Contributions

• Mathieu Leplatre
• Joey Baker http://byjoeybaker.com
• CJ Cenizal
• Jens-duttke
• Jmuccigr
• Matthew Mueller
• George Silva
• Simon Bats
• Opoto
• Lachlan Phillips
• kkdd