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
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) fire_prop.ignitions().write_to_file("demo_propagation_highres_firemap.tif") filt_fire = fire_prop.ignitions().clone() filt_fire.data["ignition"][filt_fire.data["ignition"] < export_front[0]] = 0 filt_fire.data["ignition"][filt_fire.data["ignition"] > export_front[1]] = 0 filt_fire.data["ignition"][filt_fire.data["ignition"].nonzero()] = 65535 filt_fire.write_to_image_file("demo_propagation_highres_firemap_" + str(export_front[0]) + "-" + str(export_front[1]) + ".png", layer_name="ignition") fire_env.raster.write_to_file("demo_propagation_highres_dem.tif", "elevation") # Figure terrain + ignition contour + ignition point
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) gdd.draw_ignition_points(fire_start) # gdd.figure.show() gdd.figure.savefig(".".join(("demo_seganosa_propagation", "svg")), dpi=150, bbox_inches='tight') # PLANNING ## Define the initial plan