https://github.com/watergis/elastic2mvt

This module generate Mapbox vector tiles from Elasticsearch
https://github.com/watergis/elastic2mvt

elasticsearch vector-tiles

Last synced: about 2 months ago
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This module generate Mapbox vector tiles from Elasticsearch

• Host: GitHub
• URL: https://github.com/watergis/elastic2mvt
• Owner: watergis
• License: mit
• Created: 2020-11-20T13:12:37.000Z (about 4 years ago)
• Default Branch: main
• Last Pushed: 2023-06-22T14:38:44.000Z (over 1 year ago)
• Last Synced: 2024-10-30T05:43:08.468Z (about 2 months ago)
• Topics: elasticsearch, vector-tiles
• Language: JavaScript
• Size: 159 KB
• Stars: 2
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE

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README

        
# elastic2mvt

![Node.js Package](https://github.com/watergis/elastic2mvt/workflows/Node.js%20Package/badge.svg)

![GitHub](https://img.shields.io/github/license/watergis/elastic2mvt)

This module generate Mapbox vector tiles from Elasticsearch.

Note. This is still under experimental.

## Install package

```bash

npm install @watergis/elastic2mvt

```

## Usage

```js

const elastic2mvt = require('@watergis/elastic2mvt');

const es2mvt = new elastic2mvt('localhost:9200');

const z = 14

const x = 9524

const y = 8269

const indices = [

  {

    // Please specify target Elasticsearch index name

    name : 'water_connection',

    // specify the size of searching result. Default is 10000.

    size: 10000,

    // if you don't specify, 'geom' will be used as default column name

    geometry: 'geom',

    //Please specify your query for Elasticsearch. 

    // if it is not defined, {"match_all": {}} will be used as default.

    query: { 

      "term": {

        "connection_type": "Water Kiosk"

      }

    }

  },

  {

    name : 'pipeline',

    geometry: 'geom'

  },

  {

    name : 'wss',

    geometry: 'geom'

  }

]

const buffer = await es2mvt.generate(z,x,y,indices)

console.log(buffer)

```

## Preparation

Before using this module to convert from Elasticsearch to Mapbox binary vector tile, please insert your GIS data by using `ogr2ogr`. This module adopted `flat` structure of Elasticsearch documents. It maybe does not work for other mapping types of Elastic documents which were inserted by other tools except `ogr2ogr`.

The following command is an example to insert from PostGIS.

```

ogr2ogr -f "Elasticsearch" -lco NOT_ANALYZED_FIELDS={ALL} -lco INDEX_NAME=water_connection -lco OVERWRITE=YES http://localhost:9200 "PG:host='localhost' port=5432 user='postgres' dbname='rwss_assets' password='password'" water_connection -skipfailures

```

## License

This module is under MIT license.

---

`Copyright (c) 2020 Jin IGARASHI`