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Map Tile API

MapTileApi

Bases: HEREApi

A python interface into the HERE Map Tile API

Source code in herepy/map_tile_api.py 
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class MapTileApi(HEREApi):
    """A python interface into the HERE Map Tile API"""

    def __init__(self, api_key: str = None, timeout: int = None):
        """Returns a MapTileApi instance.
        Args:
          api_key (str):
            API key taken from HERE Developer Portal.
          timeout (int):
            Timeout limit for requests.
        """

        super(MapTileApi, self).__init__(api_key, timeout)
        self._base_url = None

    def __get_error_from_response(self, json_data):
        if "error" in json_data:
            if json_data["error"] == "Unauthorized":
                return UnauthorizedError(json_data["error_description"])
        error_type = json_data.get("Type")
        error_message = json_data.get(
            "Message", "Error occurred on " + sys._getframe(1).f_code.co_name
        )
        if error_type == "Invalid Request":
            return InvalidRequestError(error_message)
        else:
            return HEREError(error_message)

    def get_maptile(
        self,
        latitude: float,
        longitude: float,
        zoom: int,
        api_type: MapTileApiType = MapTileApiType.base,
        resource_type: MapTileResourceType = BaseMapTileResourceType.alabeltile,
        map_id: str = "newest",
        scheme: str = "normal.day",
        size: int = 256,
        tile_format: str = "png8",
        query_parameters: Optional[Dict] = None,
    ) -> Optional[bytes]:
        """Returns optional bytes value of map tile with given parameters.
        Args:
          latitude (float):
            Latitude value to be used to fetch map tile.
          longitude (float):
            Longitude value to be used to fetch map tile.
          zoom (int):
            Zoom level of the map image.
          api_type (MapTileApiType):
            MapTileApiType used to generate url.
          resource_type (MapTileResourceType):
            Resource type to download map tile.
          map_id (str):
            Specifies the map version, either newest or with a hash value.
            https://developer.here.com/documentation/map-tile/dev_guide/topics/map-versions.html
          scheme (str):
            Specifies the view scheme. A complete list of the supported schemes may be obtained
            by using the https://developer.here.com/documentation/map-tile/dev_guide/topics/resource-info.html
            resource.
          size (int):
            Returned image size. The following sizes ([width, height]) are supported:
            256 = [256, 256]
            512 = [512, 512]
            The following sizes ([width, height]) are deprecated, although usage is still accepted:
            128 = [128, 128]
          tile_format (str):
            Returned image format. The following image formats are supported:
            png – PNG format, 24 bit, RGB
            png8 – PNG format, 8 bit, indexed color
            jpg – JPG format at 90% quality
            Please note that JPG is recommended for satellite and hybrid schemes only.
          query_parameters (Optional[Dict]):
            Optional Query Parameters. Refer to the API definition for values.
        Returns:
          Map tile as bytes.
        Raises:
          HEREError
        """

        server = randrange(1, 4)
        column, row = MercatorProjection.get_column_row(
            latitude=latitude, longitude=longitude, zoom=zoom
        )
        url = str.format(
            "https://{}.{}.maps.ls.hereapi.com/maptile/2.1/{}/{}/{}/{}/{}/{}/{}/{}",
            server,
            api_type.__str__(),
            resource_type.__str__(),
            map_id,
            scheme,
            zoom,
            column,
            row,
            size,
            tile_format,
        )
        if query_parameters:
            query_parameters.update({"apiKey": self._api_key})
        else:
            query_parameters = {"apiKey": self._api_key}
        url = Utils.build_url(url, extra_params=query_parameters)
        response = requests.get(url, timeout=self._timeout, stream=True)
        if isinstance(response.content, bytes):
            try:
                json_data = json.loads(response.content.decode("utf8"))
                if "error" in json_data:
                    error = self.__get_error_from_response(json_data)
                    raise error
            except UnicodeDecodeError as err:
                print("Map tile downloaded")
        return response.content

__init__(api_key=None, timeout=None)

Returns a MapTileApi instance. Args: api_key (str): API key taken from HERE Developer Portal. timeout (int): Timeout limit for requests.

Source code in herepy/map_tile_api.py 
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def __init__(self, api_key: str = None, timeout: int = None):
    """Returns a MapTileApi instance.
    Args:
      api_key (str):
        API key taken from HERE Developer Portal.
      timeout (int):
        Timeout limit for requests.
    """

    super(MapTileApi, self).__init__(api_key, timeout)
    self._base_url = None

get_maptile(latitude, longitude, zoom, api_type=MapTileApiType.base, resource_type=BaseMapTileResourceType.alabeltile, map_id='newest', scheme='normal.day', size=256, tile_format='png8', query_parameters=None)

Returns optional bytes value of map tile with given parameters. Args: latitude (float): Latitude value to be used to fetch map tile. longitude (float): Longitude value to be used to fetch map tile. zoom (int): Zoom level of the map image. api_type (MapTileApiType): MapTileApiType used to generate url. resource_type (MapTileResourceType): Resource type to download map tile. map_id (str): Specifies the map version, either newest or with a hash value. https://developer.here.com/documentation/map-tile/dev_guide/topics/map-versions.html scheme (str): Specifies the view scheme. A complete list of the supported schemes may be obtained by using the https://developer.here.com/documentation/map-tile/dev_guide/topics/resource-info.html resource. size (int): Returned image size. The following sizes ([width, height]) are supported: 256 = [256, 256] 512 = [512, 512] The following sizes ([width, height]) are deprecated, although usage is still accepted: 128 = [128, 128] tile_format (str): Returned image format. The following image formats are supported: png – PNG format, 24 bit, RGB png8 – PNG format, 8 bit, indexed color jpg – JPG format at 90% quality Please note that JPG is recommended for satellite and hybrid schemes only. query_parameters (Optional[Dict]): Optional Query Parameters. Refer to the API definition for values. Returns: Map tile as bytes. Raises: HEREError

Source code in herepy/map_tile_api.py 
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def get_maptile(
    self,
    latitude: float,
    longitude: float,
    zoom: int,
    api_type: MapTileApiType = MapTileApiType.base,
    resource_type: MapTileResourceType = BaseMapTileResourceType.alabeltile,
    map_id: str = "newest",
    scheme: str = "normal.day",
    size: int = 256,
    tile_format: str = "png8",
    query_parameters: Optional[Dict] = None,
) -> Optional[bytes]:
    """Returns optional bytes value of map tile with given parameters.
    Args:
      latitude (float):
        Latitude value to be used to fetch map tile.
      longitude (float):
        Longitude value to be used to fetch map tile.
      zoom (int):
        Zoom level of the map image.
      api_type (MapTileApiType):
        MapTileApiType used to generate url.
      resource_type (MapTileResourceType):
        Resource type to download map tile.
      map_id (str):
        Specifies the map version, either newest or with a hash value.
        https://developer.here.com/documentation/map-tile/dev_guide/topics/map-versions.html
      scheme (str):
        Specifies the view scheme. A complete list of the supported schemes may be obtained
        by using the https://developer.here.com/documentation/map-tile/dev_guide/topics/resource-info.html
        resource.
      size (int):
        Returned image size. The following sizes ([width, height]) are supported:
        256 = [256, 256]
        512 = [512, 512]
        The following sizes ([width, height]) are deprecated, although usage is still accepted:
        128 = [128, 128]
      tile_format (str):
        Returned image format. The following image formats are supported:
        png – PNG format, 24 bit, RGB
        png8 – PNG format, 8 bit, indexed color
        jpg – JPG format at 90% quality
        Please note that JPG is recommended for satellite and hybrid schemes only.
      query_parameters (Optional[Dict]):
        Optional Query Parameters. Refer to the API definition for values.
    Returns:
      Map tile as bytes.
    Raises:
      HEREError
    """

    server = randrange(1, 4)
    column, row = MercatorProjection.get_column_row(
        latitude=latitude, longitude=longitude, zoom=zoom
    )
    url = str.format(
        "https://{}.{}.maps.ls.hereapi.com/maptile/2.1/{}/{}/{}/{}/{}/{}/{}/{}",
        server,
        api_type.__str__(),
        resource_type.__str__(),
        map_id,
        scheme,
        zoom,
        column,
        row,
        size,
        tile_format,
    )
    if query_parameters:
        query_parameters.update({"apiKey": self._api_key})
    else:
        query_parameters = {"apiKey": self._api_key}
    url = Utils.build_url(url, extra_params=query_parameters)
    response = requests.get(url, timeout=self._timeout, stream=True)
    if isinstance(response.content, bytes):
        try:
            json_data = json.loads(response.content.decode("utf8"))
            if "error" in json_data:
                error = self.__get_error_from_response(json_data)
                raise error
        except UnicodeDecodeError as err:
            print("Map tile downloaded")
    return response.content