obj2osm

obj2osm

Generate OSM XML from a stream of objects matching OSM JSON

Table of Contents

• Install
• Example
• API
• Contribute
• License

Install

npm install obj2osm

Example

var toxml = require('../')
var from2Array = require('from2-array')

var input = require('../test/fixture.json')

var bounds = {
  minlat: 38.89958342598271,
  maxlat: 38.90385833966776,
  minlon: -77.02514648437499,
  maxlon: -77.01965332031249
}

from2Array.obj(input)
  .pipe(toxml({bounds: bounds}))
  .pipe(process.stdout)

output:

$ node osm.js
<?xml version="1.0" encoding="UTF-8"?><osm version="0.6" generator="obj2osm"><bounds minlat="38.89958342598271" maxlat="38.90385833966776" minlon="-77.02514648437499" maxlon="-77.01965332031249"/><node lat="38.90094671136515" lon="-77.02313139881134" timestamp="2015-12-31T20:50:35.826Z" id="1db08fd46c5a7c01" version="334fd5b5114e0ae69c151978640cd5692c9fb639c7565ba48b0cd2700e1d8547"/><way timestamp="2015-12-31T20:50:35.842Z" id="29ac0c8f50e630e9" version="57f9ec2913db5e568976372afa8997255fdb614cff48ca01565f2ddee3687bc8"><nd ref="1db08fd46c5a7c01"/><nd ref="8c50fa92c3ce91d7"/><nd ref="83c1be761a9f4148"/><nd ref="1db08fd46c5a7c01"/><tag k="area" v="yes"/></way><node lat="38.90068996279713" lon="-77.02327892030715" timestamp="2015-12-31T20:50:35.849Z" id="8c50fa92c3ce91d7" version="8f32080b4501459d8a904c568e2a0c7de92de435fab8c7d16ae2b39851046991"><tag k="amenity" v="cafe"/></node><relation timestamp="2015-12-31T20:50:35.855Z" id="83c1be761a9f4148" version="0443c3916e92250149c8086ed21b2265cb6af161dbf63a17e30a7d3c8a0cb0b1"><member ref="8c50fa92c3ce91d7" type="node" role=""/></relation></osm>

API

var toxml = require('obj2osm')

var stream = toxml(opts)

Where:

• opts.root - Root XML element (default: osm, set to null to output XML with no root)
• opts.generator - Generator attribute for the root element (default: obj2osm)
• opts.bounds - Optional bounds to include at start of XML, either {minlat: <Number>, maxlat: <Number>, minlon: <Number>, maxlon: <Number>} or [[minLat, maxLat], [minLon, maxLon]]

Returns a transform object stream that expects a stream of objects matching OSM JSON format as input and produces osm xml output or osmChange XML output if input objects have an action property set to one of: create|modify|delete.

Node object format:

• node.type - 'node'
• node.id - id string
• node.version - version string
• node.lat - latitude in degrees
• node.lon - longitude in degrees
• node.tags - Object of tag key-value pairs: {tagKey: 'tagValue', amenity: 'cafe'}

Way object format:

• way.type - 'way'
• way.id - id string
• way.version - version string
• way.nodes - array of node IDs
• way.tags - Object of tag key-value pairs

Relation object format:

• relation.type - relation.type
• relation.id - id string
• relation.version - version string
• relation.members - array of member objects: {type: 'node|way|relation', ref: 'id', role: 'role'}
• relation.tags - Object of tag key-value pairs

Contribute

PRs welcome. Please follow JS Standard Style.

License

BSD

Changelog

[2.0.1] - 2016-08-24

Fixed

• Skip objects with an invalid type property (not one of node|way|relation|bounds|changeset)