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Updated README to reference position.changed event #25

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Updated README to reference position.changed event #25

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30 changes: 16 additions & 14 deletions README.md
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Expand Up @@ -62,9 +62,9 @@ angular
}]);
```

The `$geolocation` service can expose a property `location` whose value reflects the current position. To enable this feature a watch must be created using `watchPosition`. This method takes a `PositionOptions` object in the same manner as `getCurrentPosition`. There is no return value.
The `$geolocation` service can expose a property `position` whose value reflects the current position. To enable this feature a watch must be created using `watchPosition`. This method takes a `PositionOptions` object in the same manner as `getCurrentPosition`. There is no return value.

While this watch is active the value of the property `location` is periodically updated with the latest geolocation result. If an error has occurred the code and message are available via `$geolocation.position.error`.
While this watch is active the value of the property `position` is periodically updated with the latest geolocation result. If an error has occurred the code and message are available via `$geolocation.position.error`.

The current watch can be cancelled using `clearWatch`.

Expand All @@ -79,12 +79,16 @@ angular
});
$scope.myCoords = $geolocation.position.coords; // this is regularly updated
$scope.myError = $geolocation.position.error; // this becomes truthy, and has 'code' and 'message' if an error occurs
$scope.$on('$geolocation.position.changed', function(event, newPosition) {
console.log(newPosition); //This is the current position
console.log($geolocation.position); //This is also the current position
})
}]);
```

### Usage with `angular-google-maps`

Here's an example from [@markmcdonald51](https://github.com/markmcdonald51) for using ngGeolocation with [angular-google-maps](https://angular-ui.github.io/angular-google-maps/)...
Here's an example from [@markmcdonald51](https://github.com/markmcdonald51) for using ngGeolocation with [angular-google-maps](https://angular-ui.github.io/angular-google-maps/).

```javascript
angular
Expand All @@ -95,17 +99,15 @@ angular
timeout: 60000,
maximumAge: 250,
enableHighAccuracy: true
})

$scope.$watch('myPosition.coords', function (newValue, oldValue) {
$scope.map = {
center: {
latitude: newValue.latitude,
longitude: newValue.longitude
},
zoom: 16
};
}, true);
});

$scope.$on('$geolocation.position.changed', function(event, newPosition) {
$scope.map.center = {
latitude: newPosition.coords.latitude,
longitude: newPosition.coords.longitude
};
$scope.map.zoom = 17;
});

});
```
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