mapreader.download.downloader_utils

Module Contents

Functions

create_polygon_from_latlons(min_lat, min_lon, max_lat, ...)	Creates a polygon from latitudes and longitudes.
create_line_from_latlons(lat1_lon1, lat2_lon2)	Creates a line between two points.
get_grid_bb_from_polygon(polygon, zoom_level)	Create GridBoundingBox object from shapely.Polygon
get_polygon_from_grid_bb(grid_bb)	Create shapely.Polygon object from GridBoundingBox
get_index_from_coordinate(coordinate, zoom)	Create GridIndex object from Coordinate.
get_coordinate_from_index(grid_index)	Create Coordinate object from GridIndex.

mapreader.download.downloader_utils.create_polygon_from_latlons(min_lat, min_lon, max_lat, max_lon)

Creates a polygon from latitudes and longitudes.

Parameters:

• min_lat (float) – minimum latitude

• min_lon (float) – minimum longitude

• max_lat (float) – maximum latitude

• max_lon (float) – maximum longitude

Returns:

shapely Polgyon

Return type:

Polygon

mapreader.download.downloader_utils.create_line_from_latlons(lat1_lon1, lat2_lon2)

Creates a line between two points.

Parameters:

• lat1_lon1 (tuple) – Tuple defining first point

• lat2 (tuple) – Tuple defining second point

• lat2_lon2 (tuple)

Returns:

shapely LineString

Return type:

LineString

mapreader.download.downloader_utils.get_grid_bb_from_polygon(polygon, zoom_level)

Create GridBoundingBox object from shapely.Polygon

Parameters:

• polygon (shapely.Polygon) – shapely.Polygon to convert.

• zoom_level (int) – Zoom level to use when creating GridBoundingBox

Return type:

GridBoundingBox

mapreader.download.downloader_utils.get_polygon_from_grid_bb(grid_bb)

Create shapely.Polygon object from GridBoundingBox

Parameters:

grid_bb (GridBoundingBox) – GridBoundingBox to convert.

Return type:

shapely.Polygon

mapreader.download.downloader_utils.get_index_from_coordinate(coordinate, zoom)

Create GridIndex object from Coordinate.

Parameters:

• coordinate (Coordinate) – Coordinate to convert

• zoom (int) – Zoom level to use when creating GridIndex

Return type:

GridIndex

mapreader.download.downloader_utils.get_coordinate_from_index(grid_index)

Create Coordinate object from GridIndex.

Parameters:

grid_index (GridIndex) – GridIndex to convert

Returns:

The upper left corner of the tile.

Return type:

Coordinate