def test_fastscape():
input_str = os.path.join(_THIS_DIR, 'drive_sp_params.txt')
inputs = ModelParameterDictionary(input_str)
nrows = inputs.read_int('nrows')
ncols = inputs.read_int('ncols')
dx = inputs.read_float('dx')
dt = inputs.read_float('dt')
time_to_run = inputs.read_float('run_time')
uplift = inputs.read_float('uplift_rate')
init_elev = inputs.read_float('init_elev')
mg = RasterModelGrid(nrows, ncols, dx)
mg.set_closed_boundaries_at_grid_edges(False, False, True, True)
mg.add_zeros('topographic__elevation', at='node')
z = mg.zeros(at='node') + init_elev
numpy.random.seed(0)
mg['node']['topographic__elevation'] = z + \
numpy.random.rand(len(z)) / 1000.
fr = FlowRouter(mg)
fsp = Fsc(mg, input_str)
elapsed_time = 0.
while elapsed_time < time_to_run:
if elapsed_time + dt > time_to_run:
dt = time_to_run - elapsed_time
mg = fr.route_flow(method='D8')
mg = fsp.erode(mg)
mg.at_node['topographic__elevation'][mg.core_nodes] += uplift * dt
elapsed_time += dt
z_trg = numpy.array([5.48813504e-04, 7.15189366e-04, 6.02763376e-04,
5.44883183e-04, 4.23654799e-04, 6.45894113e-04,
1.01830760e-02, 9.58036770e-03, 6.55865452e-03,
3.83441519e-04, 7.91725038e-04, 1.00142749e-02,
8.80798884e-03, 5.78387585e-03, 7.10360582e-05,
8.71292997e-05, 9.81911417e-03, 9.52243406e-03,
7.55093226e-03, 8.70012148e-04, 9.78618342e-04,
1.00629755e-02, 8.49253798e-03, 5.33216680e-03,
1.18274426e-04, 6.39921021e-04, 9.88956320e-03,
9.47119567e-03, 6.43790696e-03, 4.14661940e-04,
2.64555612e-04, 1.00450743e-02, 8.37262908e-03,
5.21540904e-03, 1.87898004e-05, 6.17635497e-04,
9.21286940e-03, 9.34022513e-03, 7.51114450e-03,
6.81820299e-04, 3.59507901e-04, 6.19166921e-03,
7.10456176e-03, 6.62585507e-03, 6.66766715e-04,
6.70637870e-04, 2.10382561e-04, 1.28926298e-04,
3.15428351e-04, 3.63710771e-04])
assert_array_almost_equal(mg.at_node['topographic__elevation'], z_trg)
def test_fastscape():
input_str = os.path.join(_THIS_DIR, 'drive_sp_params.txt')
inputs = ModelParameterDictionary(input_str)
nrows = inputs.read_int('nrows')
ncols = inputs.read_int('ncols')
dx = inputs.read_float('dx')
dt = inputs.read_float('dt')
time_to_run = inputs.read_float('run_time')
uplift = inputs.read_float('uplift_rate')
init_elev = inputs.read_float('init_elev')
mg = RasterModelGrid(nrows, ncols, dx)
mg.set_closed_boundaries_at_grid_edges(False, False, True, True)
mg.add_zeros('topographic__elevation', at='node')
z = mg.zeros(at='node') + init_elev
numpy.random.seed(0)
mg['node']['topographic__elevation'] = z + \
numpy.random.rand(len(z)) / 1000.
fr = FlowAccumulator(mg, flow_director='D8')
fsp = Fsc(mg, input_str, method='D8')
elapsed_time = 0.
while elapsed_time < time_to_run:
if elapsed_time + dt > time_to_run:
dt = time_to_run - elapsed_time
mg = fr.run_one_step()
mg = fsp.erode(mg, dt=dt)
mg.at_node['topographic__elevation'][mg.core_nodes] += uplift * dt
elapsed_time += dt
z_trg = numpy.array([5.48813504e-04, 7.15189366e-04, 6.02763376e-04,
5.44883183e-04, 4.23654799e-04, 6.45894113e-04,
1.01830760e-02, 9.58036770e-03, 6.55865452e-03,
3.83441519e-04, 7.91725038e-04, 1.00142749e-02,
8.80798884e-03, 5.78387585e-03, 7.10360582e-05,
8.71292997e-05, 9.81911417e-03, 9.52243406e-03,
7.55093226e-03, 8.70012148e-04, 9.78618342e-04,
1.00629755e-02, 8.49253798e-03, 5.33216680e-03,
1.18274426e-04, 6.39921021e-04, 9.88956320e-03,
9.47119567e-03, 6.43790696e-03, 4.14661940e-04,
2.64555612e-04, 1.00450743e-02, 8.37262908e-03,
5.21540904e-03, 1.87898004e-05, 6.17635497e-04,
9.21286940e-03, 9.34022513e-03, 7.51114450e-03,
6.81820299e-04, 3.59507901e-04, 6.19166921e-03,
7.10456176e-03, 6.62585507e-03, 6.66766715e-04,
6.70637870e-04, 2.10382561e-04, 1.28926298e-04,
3.15428351e-04, 3.63710771e-04])
assert_array_almost_equal(mg.at_node['topographic__elevation'], z_trg)
# instantiate the components:
fr = FlowRouter(mg)
# load the Fastscape module too, to allow direct comparison
fsp = FastscapeEroder(mg, "./pot_fr_params.txt")
# perform the loop:
elapsed_time = 0.0 # total time in simulation
while elapsed_time < time_to_run:
print(elapsed_time)
if elapsed_time + dt > time_to_run:
print("Short step!")
dt = time_to_run - elapsed_time
mg = fr.route_flow()
# print 'Area: ', numpy.max(mg.at_node['drainage_area'])
# mg = fsp.erode(mg)
mg = fsp.erode(mg, K_if_used="K_values")
# mg,_,_ = sp.erode(mg, dt, node_drainage_areas='drainage_area', slopes_at_nodes='topographic__steepest_slope')
# add uplift
mg.at_node["topographic__elevation"][mg.core_nodes] += uplift * dt
elapsed_time += dt
pfr = PotentialityFlowRouter(mg, "pot_fr_params.txt")
pfr.route_flow(return_components=True) # route_on_diagonals=False)
figure("Topo")
imshow_node_grid(mg, "topographic__elevation")
figure("Potentiality flow fluxes")
imshow_node_grid(mg, "water__discharge")
figure("D8 drainage areas")
imshow_node_grid(mg, "drainage_area")
figure("K (core only)")
#instantiate the components:
fr = FlowRouter(mg)
#load the Fastscape module too, to allow direct comparison
fsp = FastscapeEroder(mg, './pot_fr_params.txt')
#perform the loop:
elapsed_time = 0. #total time in simulation
while elapsed_time < time_to_run:
print(elapsed_time)
if elapsed_time+dt>time_to_run:
print("Short step!")
dt = time_to_run - elapsed_time
mg = fr.route_flow()
#print 'Area: ', numpy.max(mg.at_node['drainage_area'])
#mg = fsp.erode(mg)
mg = fsp.erode(mg, K_if_used='K_values')
#mg,_,_ = sp.erode(mg, dt, node_drainage_areas='drainage_area', slopes_at_nodes='topographic__steepest_slope')
#add uplift
mg.at_node['topographic__elevation'][mg.core_nodes] += uplift*dt
elapsed_time += dt
pfr = PotentialityFlowRouter(mg, 'pot_fr_params.txt')
pfr.route_flow(return_components=True)#route_on_diagonals=False)
figure('Topo')
imshow_node_grid(mg, 'topographic__elevation')
figure('Potentiality flow fluxes')
imshow_node_grid(mg, 'surface_water__discharge')
figure('D8 drainage areas')
imshow_node_grid(mg, 'drainage_area')
figure('K (core only)')
vid = VideoPlotter(mg, data_centering='node', step=2.5)
try:
mg = copy.deepcopy(mg_mature)
except NameError:
#run to a steady state:
#We're going to cheat by running Fastscape SP for the first part of the solution
elapsed_time = 0. #total time in simulation
while elapsed_time < time_to_run:
print(elapsed_time)
if elapsed_time+dt>time_to_run:
print("Short step!")
dt = time_to_run - elapsed_time
mg = fr.route_flow()
#print 'Area: ', numpy.max(mg.at_node['drainage_area'])
mg = fsp.erode(mg)
#mg,_,_ = sp.erode(mg, dt, node_drainage_areas='drainage_area', slopes_at_nodes='topographic__steepest_slope')
#add uplift
mg.at_node['topographic__elevation'][mg.core_nodes] += uplift*dt
elapsed_time += dt
mg_mature = copy.deepcopy(mg)
else:
#reinstantiate the components with the new grid
fr = FlowRouter(mg)
sp = StreamPowerEroder(mg, './drive_sp_params.txt')
fsp = Fsc(mg, './drive_sp_params.txt')
#load the Fastscape module too, to allow direct comparison
fsp = Fsc(mg, './drive_sp_params.txt')
# vid = VideoPlotter(mg, data_centering='node', step=2.5)
try:
mg = copy.deepcopy(mg_mature)
except NameError:
# run to a steady state:
# We're going to cheat by running Fastscape SP for the first part of the solution
elapsed_time = 0. # total time in simulation
while elapsed_time < time_to_run:
print(elapsed_time)
if elapsed_time + dt > time_to_run:
print("Short step!")
dt = time_to_run - elapsed_time
mg = fr.run_one_step()
# print 'Area: ', numpy.max(mg.at_node['drainage_area'])
mg = fsp.erode(mg)
# mg,_,_ = sp.erode(mg, dt, node_drainage_areas='drainage_area', slopes_at_nodes='topographic__steepest_slope')
# add uplift
mg.at_node["topographic__elevation"][mg.core_nodes] += uplift * dt
elapsed_time += dt
mg_mature = copy.deepcopy(mg)
else:
# reinstantiate the components with the new grid
fr = FlowAccumulator(mg, flow_director="D8")
sp = StreamPowerEroder(mg, "./drive_sp_params.txt")
fsp = Fsc(mg, "./drive_sp_params.txt")
# load the Fastscape module too, to allow direct comparison
fsp = Fsc(mg, "./drive_sp_params.txt")
#mg['node'][ 'topographic__elevation'][random_boundary_node] = 0
print('Random boundary node', random_boundary_node)
#instantiate the components:
fr = FlowRouter(mg)
sp = FastscapeEroder(mg, input_file)
time_on = time()
#perform the inner time loops:
for i in range(nt):
mg['node']['topographic__elevation'][mg.core_nodes] += uplift_per_step
mg = fr.route_flow()
mg = sp.erode(mg)
#plot long profiles along channels
pylab.figure(6)
profile_IDs = prf.channel_nodes(mg, mg.at_node['topographic__steepest_slope'],
mg.at_node['drainage_area'], mg.at_node['upstream_node_order'],
mg.at_node['flow_receiver'])
dists_upstr = prf.get_distances_upstream(mg, len(mg.at_node['topographic__steepest_slope']),
profile_IDs, mg.at_node['links_to_flow_receiver'])
prf.plot_profiles(dists_upstr, profile_IDs, mg.at_node['topographic__elevation'])
# print 'Completed loop ', i
print('Completed the simulation. Plotting...')
# MN: Set the elevation of that random outlet boundary node to zero
#mg['node'][ 'topographic__elevation'][random_boundary_node] = 0
print('Random boundary node', random_boundary_node)
#instantiate the components:
fr = FlowRouter(mg)
sp = FastscapeEroder(mg, input_file)
time_on = time()
#perform the inner time loops:
for i in range(nt):
mg['node']['topographic__elevation'][mg.core_nodes] += uplift_per_step
mg = fr.route_flow()
mg = sp.erode(mg)
#plot long profiles along channels
pylab.figure(6)
profile_IDs = prf.channel_nodes(
mg, mg.at_node['topographic__steepest_slope'],
mg.at_node['drainage_area'], mg.at_node['upstream_node_order'],
mg.at_node['flow_receiver'])
dists_upstr = prf.get_distances_upstream(
mg, len(mg.at_node['topographic__steepest_slope']), profile_IDs,
mg.at_node['links_to_flow_receiver'])
prf.plot_profiles(dists_upstr, profile_IDs,
mg.at_node['topographic__elevation'])
# print 'Completed loop ', i
print('Completed the simulation. Plotting...')
def test_fastscape():
input_str = os.path.join(_THIS_DIR, "drive_sp_params.txt")
inputs = ModelParameterDictionary(input_str)
nrows = inputs.read_int("nrows")
ncols = inputs.read_int("ncols")
dx = inputs.read_float("dx")
dt = inputs.read_float("dt")
time_to_run = inputs.read_float("run_time")
uplift = inputs.read_float("uplift_rate")
init_elev = inputs.read_float("init_elev")
mg = RasterModelGrid((nrows, ncols), xy_spacing=dx)
mg.set_closed_boundaries_at_grid_edges(False, False, True, True)
mg.add_zeros("topographic__elevation", at="node")
z = mg.zeros(at="node") + init_elev
numpy.random.seed(0)
mg["node"]["topographic__elevation"] = z + numpy.random.rand(len(z)) / 1000.0
fr = FlowAccumulator(mg, flow_director="D8")
fsp = Fsc(mg, input_str, method="D8")
elapsed_time = 0.0
while elapsed_time < time_to_run:
if elapsed_time + dt > time_to_run:
dt = time_to_run - elapsed_time
mg = fr.run_one_step()
mg = fsp.erode(mg, dt=dt)
mg.at_node["topographic__elevation"][mg.core_nodes] += uplift * dt
elapsed_time += dt
z_trg = numpy.array(
[
5.48813504e-04,
7.15189366e-04,
6.02763376e-04,
5.44883183e-04,
4.23654799e-04,
6.45894113e-04,
1.01830760e-02,
9.58036770e-03,
6.55865452e-03,
3.83441519e-04,
7.91725038e-04,
1.00142749e-02,
8.80798884e-03,
5.78387585e-03,
7.10360582e-05,
8.71292997e-05,
9.81911417e-03,
9.52243406e-03,
7.55093226e-03,
8.70012148e-04,
9.78618342e-04,
1.00629755e-02,
8.49253798e-03,
5.33216680e-03,
1.18274426e-04,
6.39921021e-04,
9.88956320e-03,
9.47119567e-03,
6.43790696e-03,
4.14661940e-04,
2.64555612e-04,
1.00450743e-02,
8.37262908e-03,
5.21540904e-03,
1.87898004e-05,
6.17635497e-04,
9.21286940e-03,
9.34022513e-03,
7.51114450e-03,
6.81820299e-04,
3.59507901e-04,
6.19166921e-03,
7.10456176e-03,
6.62585507e-03,
6.66766715e-04,
6.70637870e-04,
2.10382561e-04,
1.28926298e-04,
3.15428351e-04,
3.63710771e-04,
]
)
assert_array_almost_equal(mg.at_node["topographic__elevation"], z_trg)
