def file_osm(directory, coordinates_points):
"""
This function gets a list with tuples corresponding a geographic
points. Each tuple has the coordinates (lat, lon) of the point.
Then, it creates a bounding box which contain all coordinates
inside. Besides, it checks if exists a Open Street Map '.osm' file
in a directory. If it not exists, this function
downloads the file.
:param file_name: String
:param coordinates_points: list
the list contains tuples.
Each tuple has the latitude
and the longitude corresponding
to the geographic point.
[(lat, lon)]
:return:
"""
coordinates_list = Coordinates.coordinates_list_bbox(
coordinates_points, margin_value_coordinate=0.0)
file_name = directory + Coordinates.def_file_name(
coordinates_list) + '.osm'
file = Saves.verify_file_exists(coordinates_list, file_name)
if file is not False:
print("OSM exists in ", file)
return MAPS_DIRECTORY + file
coordinates_list = Coordinates.coordinates_list_bbox(coordinates_points)
coordinates_osm = Coordinates.coordinates_string(coordinates_list)
file_name = directory + Coordinates.def_file_name(
coordinates_list) + '.osm'
# it just download a new osm file if does not exists a file with
# the current coordinates
_osm(coordinates_osm, file_name)
return file_name
def def_file_name(directory, coordinates_points, extension):
coordinates_list = Coordinates.coordinates_list_bbox(coordinates_points)
file_name = directory + Coordinates.def_file_name(
coordinates_list) + extension
return file_name