def southwest_southeast_coords(self):
#Starting from the master origin, compute the latitude, longitude pairs of
#evenly spaced (in km) cell vertices going due east.
lat_due_east = \
map(lambda x: (vdist(kilometers=self.deltaX*x).destination(self.set_master_origin(), MakeCityGrid.bearing_east)).latitude,\
self.eastward_sampling())
lon_due_east = \
map(lambda x: (vdist(kilometers=self.deltaX*x).destination(self.set_master_origin(), MakeCityGrid.bearing_east)).longitude,\
self.eastward_sampling())
return zip(lat_due_east, lon_due_east)
def northwest_northeast_coords(self, num):
#Starting from an origin point, compute the latitude, longitude pairs of
#evenly spaced (in km) cell vertices going due north.
#The origin point is extracted from "set_tmp_origin" besed on the points
#along the west-east line.
lat_due_north = \
map(lambda x: (vdist(kilometers=self.deltaY*x).destination(self.set_tmp_origin(num),MakeCityGrid.bearing_north)).latitude,\
self.northward_sampling())
lon_due_north = \
map(lambda x: (vdist(kilometers=self.deltaY*x).destination(self.set_tmp_origin(num),MakeCityGrid.bearing_north)).longitude,\
self.northward_sampling())
return zip(lat_due_north, lon_due_north)