def example__storing_features_in_a_collection(path):
ft_list = [ft for ft in mwm.Mwm(path)]
print("List size:", len(ft_list))
ft_tuple = tuple(ft for ft in mwm.Mwm(path))
print("Tuple size:", len(ft_tuple))
def slow():
ft_with_metadata_list = []
for ft in mwm.Mwm(path):
if ft.metadata():
ft_with_metadata_list.append(ft)
return ft_with_metadata_list
ft_with_metadata_list = slow()
print("Features with metadata:", len(ft_with_metadata_list))
print("First three are:", ft_with_metadata_list[:3])
def fast():
ft_with_metadata_list = []
for ft in mwm.Mwm(path, False):
if ft.metadata():
ft_with_metadata_list.append(ft.parse())
return ft_with_metadata_list
tslow = timeit.timeit(slow, number=100)
tfast = timeit.timeit(fast, number=100)
print("Slow took {}, fast took {}.".format(tslow, tfast))
def example__sequential_processing(path):
long_names = []
for ft in mwm.Mwm(path):
if len(ft.readable_name()) > 100:
long_names.append(ft.readable_name())
print("Long names:", long_names)
def example__working_with_features(path):
it = iter(mwm.Mwm(path))
ft = it.next()
print("Feature members are:", dir(ft))
print("index:", ft.index())
print(
"types:",
ft.types(),
"redable types:",
[classif.readable_type(t) for t in ft.types()],
)
print("metadata:", ft.metadata())
print("names:", ft.names())
print("readable_name:", ft.readable_name())
print("rank:", ft.rank())
print("population:", ft.population())
print("road_number:", ft.road_number())
print("house_number:", ft.house_number())
print("postcode:", ft.postcode())
print("layer:", ft.layer())
print("geom_type:", ft.geom_type())
print("center:", ft.center())
print("geometry:", ft.geometry())
print("limit_rect:", ft.limit_rect())
print("__repr__:", ft)
for ft in it:
geometry = ft.geometry()
if ft.geom_type() == mwm.GeomType.area and len(geometry) < 10:
print("area geometry", geometry)
break
def return_ft(num):
cnt = 0
for ft in mwm.Mwm(path):
if cnt == num:
return ft
cnt += 1
def example__working_with_mwm(path):
map = mwm.Mwm(path)
print("Mwm members are:", dir(map))
print("version:", map.version())
print("type:", map.type())
print("bounds:", map.bounds())
print("sections_info:", map.sections_info())
def __init__(self, filename: str, parse: bool = True):
super().__init__(filename)
self.mwm = mwm.Mwm(filename, parse)
def make_gen(path):
return (ft for ft in mwm.Mwm(path))
def fast():
ft_with_metadata_list = []
for ft in mwm.Mwm(path, False):
if ft.metadata():
ft_with_metadata_list.append(ft.parse())
return ft_with_metadata_list
def slow():
ft_with_metadata_list = []
for ft in mwm.Mwm(path):
if ft.metadata():
ft_with_metadata_list.append(ft)
return ft_with_metadata_list
