### GeoJSON Vector Tiles A highly efficient JavaScript library for slicing GeoJSON data into [vector tiles](https://github.com/mapbox/vector-tile-spec/) (or rather their JSON equivalent) on the fly, primarily for rendering purposes. Created to power GeoJSON rendering in [Mapbox GL JS](https://github.com/mapbox/mapbox-gl-js), but can be useful for other data visualization purposes. #### Usage ```js // build an initial index of tiles var tileIndex = geojsonvt(geoJSON, { baseZoom: 14, // max zoom to preserve detail on maxZoom: 14, // zoom to slice down on first pass maxPoints: 100, // during first pass, stop slicing each tile below this number of points debug: 0 // debug level: 1 = some timing info; 2 = individual tiles timing; }); // request a particular tile var features = tileIndex.getTile(z, x, y).features; ``` #### Demo To see a **geojson-vt** in action, run `npm run build-dev`, then open `debug/index.html` in your browser and drag any GeoJSON on the page. It was tested on files up to 100Mb: 