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leaflet-geojson-vt

v1.1.0

Published

This is the package for vector-tile.

Downloads

1,551

Readme

leaflet-geojson-vt

It is a open-source leaflet plugin which generate the vector tiles for geojson data. It has the dev-dependency of geojson-vt-leaflet.

Demo

DEMO

Installation and setup

  • Using NPM:
npm install leaflet-geojson-vt
  • Quick use:
<script src="https://unpkg.com/[email protected]/geojson-vt.js"></script>
<script src="[path to js]/leaflet-geojson-vt.js"></script>

Usage

var options = {
  maxZoom: 16,
  tolerance: 3,
  debug: 0,
  style: {
    fillColor: "#1EB300",
    color: "#F2FF00",
  },
};
var vtLayer = L.geoJson.vt(geojson, options).addTo(map);

Apart from an Object, a Function can also be assigned to options.style in order to handle style dynamically.

var options = {
  maxZoom: 16,
  tolerance: 3,
  debug: 0,
  style: (properties) => {
    if (properties.ADM1_PCODE == 'NP07') {
      return  {fillColor:"#0F0",color:"#F2FF00"};
    } else {
      return  {fillColor:"#1EB300",color:"#F2FF00"};
    }
  }
};

Options are included with geojson-vt options and L.geojson style.

The following are the default options from geojson-vt.

var tileIndex = geojsonvt(data, {
    maxZoom: 14,  // max zoom to preserve detail on
    tolerance: 3, // simplification tolerance (higher means simpler)
    extent: 4096, // tile extent (both width and height)
    buffer: 64,   // tile buffer on each side
    debug: 0      // logging level (0 to disable, 1 or 2)

    indexMaxZoom: 4,        // max zoom in the initial tile index
    indexMaxPoints: 100000, // max number of points per tile in the index
    solidChildren: false    // whether to include solid tile children in the index
});

Dependency

License

LICENSE