Map generator service

Generate image in png format for the given sets of features GeoJSON.

Demo

Result:

Run server and go to http://127.0.0.1:3000/image?data={%20%22t...

Installation

yarn

Usage

Env variables

name	description	required	default
APP_SERVER_PORT	Server port	false	3000
APP_MAP_SERVICE_MAPBOX_TOKEN	MapBox token	true	-
APP_MAP_SERVICE_WEB_PORT	Web application port	false	8080

Run server

To run server required is installed Chrome or Chromium supported headless mode with GPU acceleration.

Required installed Node.js in version 8 or later.

export APP_MAP_SERVICE_MAPBOX_TOKEN={{MAPBOX_TOKEN}}
node src

Endpoints

GET /image

query parameters:

data (JSON): GeoJSON of type FeatureCollection (required)
width (number): width of result image FeatureCollection (optional)
height (number): height of result image (optional)

Example data GeoJSON:

{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "properties": {},
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              19.003279209136963,
              50.25621233113204
            ],
            [
              19.003483057022095,
              50.25593794866982
            ],
            [
              19.004191160202026,
              50.256164314315235
            ],
            [
              19.00386929512024,
              50.25634266224804
            ],
            [
              19.003279209136963,
              50.25621233113204
            ]
          ]
        ]
      }
    }
  ]
}

Run with Docker

Application uses Chromium in headless mode to generate maps, and additionaly required is GPU acceleration. Docker doesn't support GPU, so to run application in container is needed use nvidia-docker.

jakub-gawlas / map-generator-service