[GIS] Directly generate XYZ tiles from GeoJSON

geojsonmbtilestilesxyz

I would like to directly generate XYZ (=raster) tiles from a ~20 GB large GeoJSON file.

This is way too much for QGIS Tiler.
As another trick I've generated vector MBTiles from the GeoJSON, but sadly mbutil only produces garbage tile PNGs.
GeoServer randomly omits objects at higher zoomlevels, but I need to see ALL building at every zoomlevel.

Do you know any other solution for directly generating XYZ tiles?

Best Answer

I think Mapbox tool tippecanoe is what you are looking for... https://github.com/mapbox/tippecanoe

Related Solutions

[GIS] How to get started webmapping with xyz-tiles and Geoserver

If you create xyz tiles with mbutil, you don't need GeoServer. Mapping libraries like OpenLayers and Leaflet can read the image tiles directly from the tile folder mbutil creates.

For example, you create tiles in a folder called 'mytiles' and you place that folder in the root directory of your web server. The URL you pass to your mapping library to create the tile layer would be:

http://your.server.com/mytiles/{z}/{x}/{y}.png

For OpenLayers, I believe the code to initialize a tile layer is:

new ol.layer.Tile({
  source: new ol.source.XYZ({
    url: http://your.server.com/mytiles/{z}/{x}/{y}.png'
  })

[GIS] How to get OpenLayers 3 to display png tiles made in TileMill

It seems you are not zooming at the right place. For this reason it's possible you don't have tiles here... (not generated)

Change

view: new ol.View({
    projection: mercatorProjection,
    center: [40, -75.145],
    zoom: 12
}),

with

view: new ol.View({
    center: ol.proj.transform(
              [-75.145, 40], 'EPSG:4326', 'EPSG:3857'),
    zoom: 12
}),

You have a correction but for learning purpose, I will explain:

projection: mercatorProjection, was removed because default projection in OpenLayers 3 is EPSG 3857 (also know previously as EPSG 900913)
ol.proj.transform is to convert your EPSG coordinates from lon, lat (EPSG 4326) to EPSG 3857. Be careful, you were using lat, lon whereas OpenLayers uses lon, lat. See this link for a reminder about coordinates order; disclosure: I always forget too)

Best Answer

Related Solutions

[GIS] How to get started webmapping with xyz-tiles and Geoserver

[GIS] How to get OpenLayers 3 to display png tiles made in TileMill

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