The Google Maps Elevation API provides a simple interface to query locations on the earth for elevation data. Additionally, you may request sampled elevation data along paths, allowing you to calculate elevation changes along routes.
The Elevation API requires an http client and so, the library relies on Httplug which is an http client abstraction library. To install it, read this documentation.
In order to use the elevation service, you need to configure it.
The http client and message factory are mandatory. They define which http client and message factory the direction service will use for issuing http requests.
First, configure the Httplug bundle.
httplug:
classes:
client: Http\Adapter\Guzzle6\Client
message_factory: Http\Message\MessageFactory\GuzzleMessageFactory
clients:
acme:
factory: httplug.factory.guzzle6Then, configure the Google Map bundle:
ivory_google_map:
elevation:
client: httplug.client.default
message_factory: httplug.message_factory.defaultThe https flag allows you to enable/disable https for your http request:
ivory_google_map:
elevation:
https: trueThe format allows you to use json/xml format for your http request:
ivory_google_map:
elevation:
format: jsonThe API key allows you to bypass Google limitation according to your account plan:
ivory_google_map:
elevation:
api_key: ~The business account allows you to use Google Premium account:
ivory_google_map:
elevation:
business_account:
client_id: ~
secret: ~
channel: ~Once you have configured your elevation service, you can fetch it from the container and use it as explained in the documentation
use Ivory\GoogleMap\Base\Coordinate;
use Ivory\GoogleMap\Service\Base\Location\CoordinateLocation;
use Ivory\GoogleMap\Service\ELevation\PositionalElevationRequest;
$request = new PositionalElevationRequest([
new CoordinateLocation(new Coordinate(40.714728, -73.998672)),
new CoordinateLocation(new Coordinate(-34.397, 150.644)),
]);
$response = $this->container->get('ivory.google_map.direction')->route($request);