def create_wildfire_propagation(area,
ignition: ty.Sequence[TimedPoint],
wind_speed=1.,
wind_direction=3 * np.pi / 4,
world=THE_WORLD) -> FirePropagation:
"""Reference wildfire propagation"""
fire_env = Environment(area, wind_speed, wind_direction, world)
fire_prop = FirePropagation(fire_env)
for ig in ignition:
fire_prop.set_ignition_point(ig)
propagation_end_time = np.inf
fire_prop.propagate(propagation_end_time)
return fire_prop
FIRERS_LANDCOVER_DATA = os.path.join(FIRERS_DATA_FOLDER, 'landcover/')
the_world = g_environment.World(
elevation_path=FIRERS_DEM_DATA,
wind_path=FIRERS_WIND_DATA,
landcover_path=FIRERS_LANDCOVER_DATA,
wind_mesh_resolution='fine',
landcover_to_fuel_remap=g_environment.EVERYTHING_FUELMODEL_REMAP)
the_world.dem_wind_tile_split = 1
fire_env = Environment(((480025.0, 485025.0), (6210000.5, 6215000.5)), 5,
1.75 * np.pi, the_world)
# fire_env = Environment(((470010.0, 485010.0), (6210010.0, 6225010.0)), 5, 0, the_world)
# fire_env = Environment(((574995.0, 575005.0), (6199995.0, 6200005.0)), 5, 0, the_world)
fire_prop = FirePropagation(fire_env)
# now = 0
now = datetime.datetime(2020, 1, 1, 0, 0).timestamp()
ignitionpoint1 = TimedPoint(482000, 6212000.0, now)
ignitionpoint2 = TimedPoint(482000 - 250, 6212000.0 + 1800, now)
ignitionpoint3 = TimedPoint(482000 + 2000, 6212000.0 + 2000, now)
fire_prop.set_ignition_point(ignitionpoint1)
fire_prop.set_ignition_point(ignitionpoint2)
fire_prop.set_ignition_point(ignitionpoint3)
# fire_prop.set_ignition_point(TimedPoint(575000.0, 6200000.0, 0))
propagation_end_time = now + 60 * 60 * 4
export_front = (7000, 7100)
fire_prop.propagate(propagation_end_time)
FIRERS_WIND_DATA = os.path.join(FIRERS_DATA_FOLDER,
'wind')
FIRERS_LANDCOVER_DATA = os.path.join(FIRERS_DATA_FOLDER,
'landcover')
the_world = g_environment.World(elevation_path=FIRERS_DEM_DATA,
wind_path=FIRERS_WIND_DATA,
landcover_path=FIRERS_LANDCOVER_DATA)
seganosa_fire_env = Environment([[2799134.0, 2805134.0], [2296388.0, 2302388.0]],
3, 0, the_world)
# 6km by 6km around seganosa. Wind: 3m/s W->E
# FIRE PROPAGATION
## Fire started 6 hours ago. Predict until 2 hours in the future
fire_prop = FirePropagation(seganosa_fire_env)
four_hours_ago = (datetime.datetime.now() - datetime.timedelta(hours=6)).timestamp()
now = datetime.datetime.now().timestamp()
four_hours_from_now = (datetime.datetime.now() + datetime.timedelta(hours=2)).timestamp()
fire_start = TimedPoint(2802134.0 - 1500.0, 2299388.0, four_hours_ago)
fire_prop.set_ignition_point(fire_start)
fire_prop.propagate(until=four_hours_from_now)
## Figure terrain + ignition contour + ignition point
gdd = display.GeoDataDisplay.pyplot_figure(
seganosa_fire_env.raster.combine(fire_prop.ignitions().slice(["ignition"])),
frame=(0., 0.))
gdd.draw_elevation_shade(with_colorbar=False, cmap=matplotlib.cm.terrain)
gdd.draw_wind_quiver()
gdd.draw_ignition_contour(with_labels=True, cmap=matplotlib.cm.plasma)