def stns_near_lat_lon(latitude, longitude, year, N=20, id_filter=None):
"""
latitude: float -> latitude of weather location
longitude: negative float, coerced to negative if positive -> longitude of weather location
year: int -> the year of desired weather data
N: int -> number of desired results
id_filter: function that returns station ids filtered on some condition
displays information about the N closest stations to the given coordinates
"""
latitude = float(latitude)
longitude = float(longitude)
if longitude > 0.:
longitude = -1. * longitude
lines = [" ".join([' ', "Station ID".ljust(12), "Station Name".ljust(30), " ", "Dist. (miles)"]) + "\n"]
def show_stn(stn_id, rank):
d = stns[stn_id]
info_str = " ".join([(str(rank)+".").ljust(3),
stn_id.ljust(12),
stns[stn_id]['name'].ljust(30),
stns[stn_id]['state'].ljust(4),
str(round(haversine(latitude, longitude, stns[stn_id]['lat'], stns[stn_id]['lon']), 1))]) + "\n"
return info_str
stn_ids = [_id for _id in stns if int(stns[_id]['sd'].year) <= year and int(stns[_id]['ed'].year) >= year]
# optionally filter station ids
if id_filter:
stn_ids = id_filter(stn_ids)
_ids = sorted(stn_ids, key=lambda _id: haversine(latitude, longitude, stns[_id]['lat'], stns[_id]['lon']))[:N]
lines += [show_stn(_id, j) for j, _id in enumerate(_ids)]
if len(lines) > 1:
print "".join(lines)
else:
print "No stations were found that matched these criteria."
def show_stn(stn_id, rank):
d = stns[stn_id]
info_str = " ".join([(str(rank)+".").ljust(3),
stn_id.ljust(12),
stns[stn_id]['name'].ljust(30),
stns[stn_id]['state'].ljust(4),
str(round(haversine(latitude, longitude, stns[stn_id]['lat'], stns[stn_id]['lon']), 1))]) + "\n"
return info_str
def show_stn(stn_id, rank):
d = stns[stn_id]
info_str = " ".join(
[(str(rank) + ".").ljust(3),
stn_id.ljust(12), stns[stn_id]['name'].ljust(30),
stns[stn_id]['state'].ljust(4),
str(
round(
haversine(latitude, longitude, stns[stn_id]['lat'],
stns[stn_id]['lon']), 1))]) + "\n"
return info_str
def stns_near_lat_lon(latitude, longitude, year, N=20, id_filter=None):
"""
latitude: float -> latitude of weather location
longitude: negative float, coerced to negative if positive -> longitude of weather location
year: int -> the year of desired weather data
N: int -> number of desired results
id_filter: function that returns station ids filtered on some condition
displays information about the N closest stations to the given coordinates
"""
latitude = float(latitude)
longitude = float(longitude)
if longitude > 0.:
longitude = -1. * longitude
lines = [
" ".join([
' ', "Station ID".ljust(12), "Station Name".ljust(30), " ",
"Dist. (miles)"
]) + "\n"
]
def show_stn(stn_id, rank):
d = stns[stn_id]
info_str = " ".join(
[(str(rank) + ".").ljust(3),
stn_id.ljust(12), stns[stn_id]['name'].ljust(30),
stns[stn_id]['state'].ljust(4),
str(
round(
haversine(latitude, longitude, stns[stn_id]['lat'],
stns[stn_id]['lon']), 1))]) + "\n"
return info_str
stn_ids = [
_id for _id in stns if int(stns[_id]['sd'].year) <= year
and int(stns[_id]['ed'].year) >= year
]
# optionally filter station ids
if id_filter:
stn_ids = id_filter(stn_ids)
_ids = sorted(stn_ids,
key=lambda _id: haversine(latitude, longitude, stns[_id][
'lat'], stns[_id]['lon']))[:N]
lines += [show_stn(_id, j) for j, _id in enumerate(_ids)]
if len(lines) > 1:
print "".join(lines)
else:
print "No stations were found that matched these criteria."
