def test_sp_discharges_new(): input_str = os.path.join(_THIS_DIR, 'test_sp_params_discharge_new.txt') inputs = ModelParameterDictionary(input_str) nrows = 5 ncols = 5 dx = inputs.read_float('dx') dt = inputs.read_float('dt') mg = RasterModelGrid(nrows, ncols, dx) mg.add_zeros('topographic__elevation', at='node') z = np.array([ 5., 5., 0., 5., 5., 5., 2., 1., 2., 5., 5., 3., 2., 3., 5., 5., 4., 4., 4., 5., 5., 5., 5., 5., 5. ]) mg['node']['topographic__elevation'] = z fr = FlowRouter(mg) sp = StreamPowerEroder(mg, **inputs) # perform the loop (once!) for i in range(1): fr.route_flow() sp.run_one_step(dt) z_tg = np.array([ 5.00000000e+00, 5.00000000e+00, 0.00000000e+00, 5.00000000e+00, 5.00000000e+00, 5.00000000e+00, 1.29289322e+00, 1.00000000e-06, 1.29289322e+00, 5.00000000e+00, 5.00000000e+00, 2.29289322e+00, 1.00000000e+00, 2.29289322e+00, 5.00000000e+00, 5.00000000e+00, 3.29289322e+00, 3.00000000e+00, 3.29289322e+00, 5.00000000e+00, 5.00000000e+00, 5.00000000e+00, 5.00000000e+00, 5.00000000e+00, 5.00000000e+00 ]) assert_array_almost_equal(mg.at_node['topographic__elevation'], z_tg)
def test_sp_discharges_new(): input_str = os.path.join(_THIS_DIR, 'test_sp_params_discharge_new.txt') inputs = ModelParameterDictionary(input_str, auto_type=True) nrows = 5 ncols = 5 dx = inputs.read_float('dx') dt = inputs.read_float('dt') mg = RasterModelGrid(nrows, ncols, dx) mg.add_zeros('topographic__elevation', at='node') z = np.array([ 5., 5., 0., 5., 5., 5., 2., 1., 2., 5., 5., 3., 2., 3., 5., 5., 4., 4., 4., 5., 5., 5., 5., 5., 5. ]) mg['node']['topographic__elevation'] = z fr = FlowRouter(mg) sp = StreamPowerEroder(mg, **inputs) # perform the loop (once!) for i in range(1): fr.route_flow() sp.run_one_step(dt) z_tg = np.array([ 5., 5., 0., 5., 5., 5., 1.47759225, 0.43050087, 1.47759225, 5., 5., 2.32883687, 1.21525044, 2.32883687, 5., 5., 3.27261262, 3.07175015, 3.27261262, 5., 5., 5., 5., 5., 5. ]) assert_array_almost_equal(mg.at_node['topographic__elevation'], z_tg)
def test_storms(): input_file_string = os.path.join(_THIS_DIR, 'drive_sp_params_storms.txt') inputs = ModelParameterDictionary(input_file_string) 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') mg = RasterModelGrid(nrows, ncols, dx) mg.add_zeros('topographic__elevation', at='node') z = mg.zeros(at='node') mg['node']['topographic__elevation'] = z + np.random.rand(len(z)) / 1000. mg.add_zeros('water__unit_flux_in', at='node') precip = PrecipitationDistribution(input_file=input_file_string) fr = FlowRouter(mg) sp = StreamPowerEroder(mg, **inputs) for (interval_duration, rainfall_rate) in \ precip.yield_storm_interstorm_duration_intensity(): if rainfall_rate != 0.: mg.at_node['water__unit_flux_in'].fill(rainfall_rate) mg = fr.route_flow() sp.run_one_step(dt) mg.at_node['topographic__elevation'][ mg.core_nodes] += uplift * interval_duration
def test_sp_voronoi(): nnodes = 100 np.random.seed(0) x = np.random.rand(nnodes) np.random.seed(1) y = np.random.rand(nnodes) mg = VoronoiDelaunayGrid(x, y) np.random.seed(2) z = mg.add_field('node', 'topographic__elevation', np.random.rand(nnodes) / 10000., copy=False) fr = FlowRouter(mg) spe = StreamPowerEroder(mg, os.path.join(_THIS_DIR, 'drive_sp_params_voronoi.txt')) for i in range(10): z[mg.core_nodes] += 0.01 fr.route_flow() spe.erode(mg, 1.) z_tg = np.array([4.35994902e-05, 2.59262318e-06, 5.49662478e-05, 6.56738615e-03, 4.20367802e-05, 1.21371424e-02, 2.16596169e-02, 4.73320898e-02, 6.00389761e-02, 5.22007356e-02, 5.37507115e-02, 5.95794752e-02, 5.29862904e-02, 6.76465914e-02, 7.31720024e-02, 6.18730861e-02, 8.53975293e-05, 5.32189275e-02, 7.34302556e-02, 8.07385044e-02, 5.05246090e-05, 4.08940657e-02, 7.39971005e-02, 3.31915602e-02, 6.72650419e-02, 5.96745309e-05, 4.72752445e-02, 3.60359567e-02, 7.59432065e-02, 7.24461985e-02, 7.80305760e-02, 4.93866869e-02, 8.69642467e-02, 7.21627626e-02, 8.96368291e-02, 4.65142080e-02, 6.07720217e-02, 8.83372939e-02, 2.35887558e-02, 7.97616193e-02, 8.35615355e-02, 4.61809032e-02, 6.34634214e-02, 9.25711770e-02, 4.11717225e-03, 7.24493623e-02, 7.97908053e-02, 9.10375623e-02, 9.13155023e-02, 7.10567915e-02, 7.35271752e-02, 6.13091341e-02, 9.45498463e-02, 8.48532386e-02, 8.82702021e-02, 7.14969941e-02, 2.22640943e-02, 8.53311932e-02, 7.49161159e-02, 3.48837223e-02, 9.30132692e-02, 6.01817121e-05, 3.87455443e-02, 8.44673586e-02, 9.35213577e-02, 6.76075824e-02, 1.58614508e-02, 8.51346837e-02, 8.83645680e-02, 8.69944117e-02, 5.04000439e-05, 5.02319084e-02, 8.63882765e-02, 5.00991880e-02, 7.65156630e-02, 5.07591983e-02, 6.54909962e-02, 6.91505342e-02, 7.33358371e-02, 5.30109890e-02, 2.99074601e-02, 2.55509418e-06, 8.21523907e-02, 8.09368483e-02, 4.35073025e-02, 3.04096109e-02, 3.26298627e-02, 4.92259177e-02, 5.48690358e-02, 6.44732130e-02, 6.28133567e-02, 4.17977098e-06, 5.37149677e-02, 4.32828136e-02, 1.30559903e-02, 2.62405261e-02, 2.86079272e-02, 6.61481327e-05, 1.70477133e-05, 8.81652236e-05]) assert_array_almost_equal(mg.at_node['topographic__elevation'], z_tg)
def test_sp_voronoi(): nnodes = 100 np.random.seed(0) x = np.random.rand(nnodes) np.random.seed(1) y = np.random.rand(nnodes) mg = VoronoiDelaunayGrid(x, y) np.random.seed(2) z = mg.add_field('node', 'topographic__elevation', np.random.rand(nnodes) / 10000., copy=False) fr = FlowRouter(mg) spe = StreamPowerEroder( mg, os.path.join(_THIS_DIR, 'drive_sp_params_voronoi.txt')) for i in range(10): z[mg.core_nodes] += 0.01 fr.route_flow() spe.erode(mg, 1.) z_tg = np.array([ 4.35994902e-05, 2.59262318e-06, 5.49662478e-05, 4.36094902e-05, 4.20367802e-05, 2.16664196e-03, 1.23484520e-02, 4.07654109e-02, 5.69974645e-02, 4.71086393e-02, 5.55056467e-02, 5.53655860e-02, 4.87984556e-02, 6.62132007e-02, 7.33132951e-02, 6.10003971e-02, 8.53975293e-05, 4.90709812e-02, 7.84728490e-02, 8.26091298e-02, 5.05246090e-05, 3.69289510e-02, 7.56743264e-02, 2.52850671e-02, 6.80517443e-02, 5.96745309e-05, 3.86335644e-02, 4.12526935e-02, 7.78476139e-02, 7.18165632e-02, 7.62359762e-02, 6.65702961e-02, 9.04684278e-02, 7.37203974e-02, 9.16862054e-02, 4.11168411e-02, 4.36498947e-02, 9.04430763e-02, 1.42123575e-02, 8.02734138e-02, 8.34895711e-02, 4.51564589e-02, 6.47124169e-02, 9.52317640e-02, 6.01917122e-05, 7.11667309e-02, 8.00463179e-02, 9.40668605e-02, 9.33247720e-02, 7.34011920e-02, 7.30924467e-02, 6.21387674e-02, 9.66278589e-02, 8.64266637e-02, 9.06100497e-02, 7.19991365e-02, 1.07162442e-02, 8.68685360e-02, 7.40515066e-02, 2.73264483e-02, 9.55406046e-02, 6.01817121e-05, 3.28663723e-02, 8.60706344e-02, 9.56285286e-02, 4.24741937e-02, 5.64139004e-03, 8.72373392e-02, 9.04304841e-02, 8.83708170e-02, 5.04000439e-05, 6.47845229e-02, 8.77304766e-02, 4.40894724e-02, 8.08029139e-02, 4.52732792e-02, 6.35806712e-02, 6.71004941e-02, 7.32682350e-02, 4.88067087e-02, 2.14920377e-02, 2.55509418e-06, 8.25346959e-02, 8.12610977e-02, 3.75778123e-02, 2.20818912e-02, 2.45940192e-02, 4.43365163e-02, 4.93255141e-02, 6.23517572e-02, 5.99594648e-02, 4.17977098e-06, 4.96450779e-02, 3.72952724e-02, 2.26332108e-03, 1.69925430e-02, 1.99835635e-02, 6.61481327e-05, 1.70477133e-05, 8.81652236e-05 ]) assert_array_almost_equal(mg.at_node['topographic__elevation'], z_tg)
def test_sp_new(): """ Tests new style component instantiation and run. """ input_str = os.path.join(_THIS_DIR, 'drive_sp_params.txt') inputs = ModelParameterDictionary(input_str, auto_type=True) 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), spacing=(dx, 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) sp = StreamPowerEroder(mg, **inputs) elapsed_time = 0. while elapsed_time < time_to_run: if elapsed_time + dt > time_to_run: dt = time_to_run - elapsed_time fr.route_flow() sp.run_one_step(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, 1.02783376e-02, 9.66667235e-03, 6.15060782e-03, 3.83441519e-04, 7.91725038e-04, 1.00905776e-02, 8.98955843e-03, 5.32836181e-03, 7.10360582e-05, 8.71292997e-05, 9.96377080e-03, 9.63738797e-03, 7.31213677e-03, 8.70012148e-04, 9.78618342e-04, 1.02124693e-02, 8.78386002e-03, 4.88161060e-03, 1.18274426e-04, 6.39921021e-04, 1.00377580e-02, 9.54340293e-03, 6.05173814e-03, 4.14661940e-04, 2.64555612e-04, 1.02160196e-02, 8.61600088e-03, 4.77005225e-03, 1.87898004e-05, 6.17635497e-04, 9.30445558e-03, 9.48713993e-03, 7.25689742e-03, 6.81820299e-04, 3.59507901e-04, 5.79161813e-03, 6.83777542e-03, 6.18063842e-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_sp_new(): """ Tests new style component instantiation and run. """ input_str = os.path.join(_THIS_DIR, 'drive_sp_params.txt') inputs = ModelParameterDictionary(input_str, auto_type=True) 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), spacing=(dx, 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) sp = StreamPowerEroder(mg, **inputs) elapsed_time = 0. while elapsed_time < time_to_run: if elapsed_time + dt > time_to_run: dt = time_to_run - elapsed_time fr.route_flow() sp.run_one_step(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)
def test_sp_discharges_old(): input_str = os.path.join(_THIS_DIR, 'test_sp_params_discharge.txt') inputs = ModelParameterDictionary(input_str) nrows = 5 ncols = 5 dx = inputs.read_float('dx') dt = inputs.read_float('dt') mg = RasterModelGrid(nrows, ncols, dx) mg.add_zeros('topographic__elevation', at='node') z = np.array([ 5., 5., 0., 5., 5., 5., 2., 1., 2., 5., 5., 3., 2., 3., 5., 5., 4., 4., 4., 5., 5., 5., 5., 5., 5. ]) mg['node']['topographic__elevation'] = z fr = FlowRouter(mg) sp = StreamPowerEroder(mg, input_str) # perform the loop (once!) for i in range(1): fr.route_flow() my_Q = mg.at_node['water__volume_flux'] * 1. sp.erode(mg, dt, node_drainage_areas='drainage_area', slopes_at_nodes='topographic__steepest_slope', Q_if_used=my_Q) z_tg = np.array([ 5.00000000e+00, 5.00000000e+00, 0.00000000e+00, 5.00000000e+00, 5.00000000e+00, 5.00000000e+00, 1.29289322e+00, 1.00000000e-06, 1.29289322e+00, 5.00000000e+00, 5.00000000e+00, 2.29289322e+00, 1.00000000e+00, 2.29289322e+00, 5.00000000e+00, 5.00000000e+00, 3.29289322e+00, 3.00000000e+00, 3.29289322e+00, 5.00000000e+00, 5.00000000e+00, 5.00000000e+00, 5.00000000e+00, 5.00000000e+00, 5.00000000e+00 ]) assert_array_almost_equal(mg.at_node['topographic__elevation'], z_tg)
def test_sp_widths(): input_str = os.path.join(_THIS_DIR, 'test_sp_params_widths.txt') inputs = ModelParameterDictionary(input_str, auto_type=True) nrows = 5 ncols = 5 dx = inputs.read_float('dx') dt = inputs.read_float('dt') mg = RasterModelGrid(nrows, ncols, dx) widths = np.ones(mg.number_of_nodes, dtype=float) mg.add_zeros('topographic__elevation', at='node') z = np.array([ 5., 5., 0., 5., 5., 5., 2., 1., 2., 5., 5., 3., 2., 3., 5., 5., 4., 4., 4., 5., 5., 5., 5., 5., 5. ]) mg['node']['topographic__elevation'] = z fr = FlowRouter(mg) sp = StreamPowerEroder(mg, use_W=widths, **inputs) # perform the loop (once!) for i in range(1): fr.route_flow() sqrt_A = mg.at_node['drainage_area']**0.5 widths[mg.core_nodes] = sqrt_A[mg.core_nodes] / sqrt_A[ mg.core_nodes].mean() # so widths has mean=1. # note the issue with drainage_area not defined at perimeter => nans # if not careful... sp.run_one_step(dt) z_tg = np.array([ 5., 5., 0., 5., 5., 5., 1.37222369, 0.36876358, 1.37222369, 5., 5., 2.17408606, 1.07986038, 2.17408606, 5., 5., 3.08340277, 2.85288049, 3.08340277, 5., 5., 5., 5., 5., 5. ]) assert_array_almost_equal(mg.at_node['topographic__elevation'], z_tg)
mg = RasterModelGrid(nrows, ncols, dx) # create the fields in the grid mg.add_zeros('topographic__elevation', at='node') z = np.array([ 5., 5., 0., 5., 5., 5., 2., 1., 2., 5., 5., 3., 2., 3., 5., 5., 4., 4., 4., 5., 5., 5., 5., 5., 5. ]) mg['node']['topographic__elevation'] = z print('Running ...') # instantiate the components: fr = FlowRouter(mg) sp = StreamPowerEroder(mg, './drive_sp_params_discharge.txt') # load the Fastscape module too, to allow direct comparison fsp = Fsc(mg, './drive_sp_params_discharge.txt') # perform the loop (once!) for i in range(1): fr.route_flow(method='D8') my_Q = mg.at_node['water__volume_flux'] * 1. sp.erode(mg, dt, node_drainage_areas='drainage_area', slopes_at_nodes='topographic__steepest_slope', Q_if_used=my_Q) # no uplift # print the stream power that was calculated:
mg.add_zeros('topographic__elevation', at='node') z = mg.zeros(at='node') + init_elev mg['node']['topographic__elevation'] = z + numpy.random.rand(len(z)) / 1000. mg.add_zeros('node', 'water__unit_flux_in') #make some K values in a field to test #mg.at_node['K_values'] = 0.1+numpy.random.rand(nrows*ncols)/10. mg.at_node['K_values'] = numpy.empty(nrows * ncols, dtype=float) #mg.at_node['K_values'].fill(0.1+numpy.random.rand()/10.) mg.at_node['K_values'].fill(0.001) print('Running ...') #instantiate the components: fr = FlowRouter(mg) sp = StreamPowerEroder(mg, input_file_string) #fsp = FastscapeEroder(mg, input_file_string) precip = PrecipitationDistribution(input_file=input_file_string) #load the Fastscape module too, to allow direct comparison fsp = FastscapeEroder(mg, input_file_string) try: #raise NameError mg = copy.deepcopy(mg_mature) except NameError: print('building a new grid...') out_interval = 50000. last_trunc = time_to_run #we use this to trigger taking an output plot #run to a steady state: #We're going to cheat by running Fastscape SP for the first part of the solution
rock_stress_param = inputs.read_float("rock_density") * 9.81 mg = RasterModelGrid(nrows, ncols, dx) # create the fields in the grid mg.add_zeros("topographic__elevation", at="node") z = mg.zeros(at="node") + init_elev mg["node"]["topographic__elevation"] = z + np.random.rand(len(z)) / 1000. # make some surface load stresses in a field to test mg.at_node["surface_load__stress"] = np.zeros(nrows * ncols, dtype=float) # instantiate: gf = gFlex(mg, "./coupled_SP_gflex_params.txt") fsp = FastscapeEroder(mg, "./coupled_SP_gflex_params.txt") sp = StreamPowerEroder(mg, "./coupled_SP_gflex_params.txt") fr = FlowAccumulator(mg, flow_director="D8") # 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.run_one_step() # mg = fsp.erode(mg) mg, _, _ = sp.erode( mg, dt, node_drainage_areas="drainage_area",
#create the fields in the grid mg.add_zeros('topographic__elevation', at='node') z = mg.zeros(at='node') + init_elev mg['node']['topographic__elevation'] = z + numpy.random.rand(len(z)) / 1000. #make some K values in a field to test mg.at_node['K_values'] = 0.1 + numpy.random.rand(nrows * ncols) / 10. mg.set_closed_boundaries_at_grid_edges(False, True, True, True) print('Running ...') time_on = time.time() #instantiate the components: fr = FlowRouter(mg) sp = StreamPowerEroder(mg, './drive_sp_params.txt') #load the Fastscape module too, to allow direct comparison fsp = FastscapeEroder(mg, './drive_sp_params.txt') #perform the loop: elapsed_time = 0. #total time in simulation counter = 0. 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(method='D8') #print 'Area: ', numpy.max(mg.at_node['drainage_area']) #mg = fsp.erode(mg) mg, _, _ = sp.erode(mg,
from six.moves import range from landlab import VoronoiDelaunayGrid from landlab.components.flow_routing import FlowRouter from landlab.components.stream_power import StreamPowerEroder from landlab.plot.imshow import imshow_node_grid import numpy as np from matplotlib.pyplot import figure, show nnodes = 10000 x, y = np.random.rand(nnodes), np.random.rand(nnodes) mg = VoronoiDelaunayGrid(x,y) z = mg.add_field('node', 'topographic__elevation', np.random.rand(nnodes)/10000., copy=False) fr = FlowRouter(mg) spe = StreamPowerEroder(mg, 'drive_sp_params_voronoi.txt') for i in range(100): z[mg.core_nodes] += 0.01 fr.route_flow() spe.erode(mg, 1.) imshow_node_grid(mg, 'topographic__elevation') show()