ubukawa / hex

creation of hex polygon vector tile

hex

creation of hex polygon vector tile

Usage

Prep. Clone and npm install

git clone https://github.com/ubukawa/hex
cd hex
npm install

1. Edit config parameters

Please edit config/default.hjson.

{
    r: 80000
    gap: 0.01
    minz: 0
    maxz: 4
    layer: hex
    outputFile: output
    epsg: 3857
    xRange: 40075016.68
    yRange: 40097932.2
}

r is the length of a side of hexagon in meters.
gap is not yet used. xRange and yRange should be changed if you use other projection than EPSG:3857.

2. Run index.js to create GeoJSON

node index.js

Please wait for a while until GeoJSON file is created.

You will get the file ${outputFile}-(length in km).geojson.

3. Convert GeoJSON into vector tile

tippecanoe -o docs/output.pmtiles --no-tile-compression --no-feature-limit --no-tile-size-limit --projection=EPSG:3857 --force input.geojson  

(fyi) shape conversion

ogr2ogr -f "ESRI Shapefile" shp/400.shp geojson/output-400.geojson

To create GeoJSON,

node index-geojson.js