Batch geocode addresses from multiple sources. It limits the calls to not run in OVER_QUERY_LIMIT by the Google Maps API. Results are cached locally to prevent duplicate geocoding requests.
Install GeoBatch:
npm install geobatch --saveThen include and use it in your project:
var GeoBatch = require('geobatch'),
geoBatch = new GeoBatch();
geoBatch.geocode(['Hamburg', 'Berlin'])
.on('data', function(data) {
console.log('Geocode result', data);
})
.on('end', function() {
console.log('Finished!');
});geoBatch.geocode also accepts a stream as input.
The data in the example above is an object like this:
{
error: null,
address: 'Hamburg',
input: 'Hamburg',
location: { lat: 53.5510846, lng: 9.9936818 },
result: {
address_components: [ … ],
formatted_address: 'Hamburg, Germany',
geometry: {
bounds: { northeast: [Object], southwest: [Object] },
location: { lat: 53.5510846, lng: 9.9936818 },
location_type: 'APPROXIMATE',
viewport: { northeast: [Object], southwest: [Object] } },
place_id: 'ChIJuRMYfoNhsUcRoDrWe_I9JgQ',
types: [ 'locality', 'political' ]
}
},
results: [{
address_components: [ … ],
formatted_address: 'Hamburg, Germany',
geometry: {
bounds: { northeast: [Object], southwest: [Object] },
location: { lat: 53.5510846, lng: 9.9936818 },
location_type: 'APPROXIMATE',
viewport: { northeast: [Object], southwest: [Object] } },
place_id: 'ChIJuRMYfoNhsUcRoDrWe_I9JgQ',
types: [ 'locality', 'political' ]
}]
},
total: 2,
current: 1,
pending: 1,
percent: 50,
estimatedDuration: 189
}Type string. Contains the error message. Default null.
Type string. Contains the address that was put into the geocoder. Default ''.
Contains the original input. This was the input to the accessor function to get the address.
Type Object. The coordinates returned from the Google Maps Geocoding API. Default {}.
Type Object. The complete first result item from the Google Maps Geocoding API. Default {}.
Type Array. The complete result from the Google Maps Geocoding API.
Type Number. The total number of addresses to geocode. (Not included if stream was provided.)
Type Number. The index of the current geocoded address.
Type Number. The number of addresses to still geocode. (Not included if stream was provided.)
Type Number. The percentage that got geocoded already. (Not included if stream was provided.)
Type Number. The estimated duration based on past progress. In milliseconds. (Not included if stream was provided.)
You can pass in options on initalization of the GeoBatch:
new GeoBatch({
clientId: 'myClientId',
privateKey: 'myPrivateKey',
apiKey: 'myApiKey',
cacheFile: 'myGeocache.db',
accessor: myAccessorFunction,
maxRetries: 1,
queriesPerSecond: 50
});Type String. The Google Maps Client ID, if you are using Google for Work. If this is passed in, the privateKey is also required.
You must provide either a clientId and privateKey, or an apiKey. Default is null.
Type String. The Google Maps private key, if you are using Google for Work. If this is passed in, the clientId is also required. Default is null.
Type String. The Google Maps API key. If this is passed, neither clientId nor privateKey may be set.
You must provide either a clientId and privateKey, or an apiKey.
Default is null.
Type String. The path of the cache file, in which the geocoding responses are cached. Default is geocache.db.
Type Function. An accessor function that extracts the address data from the provided input. Defaults to:
function(address) {
return address;
}Type Number. This option defines how often Geobatch will retry geocoding if the query limit was exceeded.
Default is 0.
Type Number. The maximum number of requests per second. This number must be between 1 and 50 (inclusive).
Please note that due to varying network latency the maximum value of 50 QPS will result in occasional OVER_QUERY_LIMIT errors.
Use a moderate value (the default is safe), or the maxRetries option.
Default is 35.
Make sure to follow the Git Commit Conventions! Test and lint the code and adapt to the code style used in the project.
Clone the repository and run:
npm installTo run the tests, run:
npm test
To make a release, run:
npm run release patch|minor|major
Copyright © 2015 Ubilabs GmbH
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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