osm-pbf-io

Reader

Example

const OsmPbfReader = require('osm-pbf-io').Reader;
 
const reader = new OsmPbfReader('./thailand-latest.osm.pbf');
 
reader.on('nodes', nodes => {
  nodes.forEach(node => {
    console.log(`Node ID ${node.id} @${node.lat},${node.lng}`);
  });
});
 
reader.on('ways', ways => {
  ways.forEach(way => {
    console.log(`Way ID ${way.id} (refs: ${way.refs.join(', ')})`);
  });
});
 
reader.on('relations', relations => {
  relations.forEach(relation => {
    console.log(`Relation ID ${relation.id} members: ${relation.members.length}`);
  });
});
 
reader.on('finish', () => {
  console.log('Finish');
});
 
reader.start();
 

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Writer

Example

const OsmPbfTypes = require('osm-pbf-io').Types;
const OsmPbfWriter = require('osm-pbf-io').Writer;
 
const nodes = [
  {id: 1, type: OsmPbfTypes.node, lat: 18.766886, lng: 99.017465, tags: {name: 'test_node'}},
  {id: 2, type: OsmPbfTypes.node, lat: 18.761441, lng: 99.019739, tags: {}}
];
 
const ways = [
  {id: 3, type: OsmPbfTypes.way, refs: [1, 2], tags: {name: 'test_way'}}
];
 
const relations = [
  {id: 4, type: OsmPbfTypes.relation, members: [
    {id: 1, role: 'test_role', type: OsmPbfTypes.node},
    {id: 3, role: 'test_role', type: OsmPbfTypes.way}
  ]}
];
 
const writer = new OsmPbfWriter('./output.osm.pbf');
 
// event when file is successfully written and closed
writer.on('finish', () => {
  console.log('Success!');
});
 
nodes.forEach(node => { writer.addGeo(node); });
ways.forEach(way => { writer.addGeo(way); });
relations.forEach(relation => { writer.addGeo(relation); });
writer.finish(); // call this method when finish adding geos

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Object Schemas

Node

• id: number
• lat: number - Latitude
• lng: nnumber - Longitude
• type: 0 - Always zero for node type
• ...data - Other data (see below at Other Data)

Way

• id: number
• refs: number[] - array of node ids
• type: 1 - Always one for way type
• ...data - Other data (see below at Other Data)

Relation

• id: number
• type: 2 - Always two for relation type
• members: memberObject[] - Array of members in this relation, each object element in this array contains following fields:
  • memberObject.id: number - id of member
  • memberObject.role: string - member role
  • memberObject.type: number - 0 if the member is node, 1 if way, and 2 if relation
• ...data - Other data (see below at Other Data)

Other data

Possible info fields in each element. In Reader these might exist or not after read, in Writer these are optional for writing.

• tags: object - Element tags
• version: any
• timestamp: Date - Date object in javascript
• changeSet: any
• uid: number
• username: string

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