本文整理汇总了Python中landlab.components.flow_accum.FlowAccumulator类的典型用法代码示例。如果您正苦于以下问题：Python FlowAccumulator类的具体用法？Python FlowAccumulator怎么用？Python FlowAccumulator使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了FlowAccumulator类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_accumulated_area_closes
def test_accumulated_area_closes():
"""Check that accumulated area is area of core nodes."""
fds= ['Steepest','D8','MFD','DINF']
for fd in fds:
mg = RasterModelGrid((10,10), spacing=(1, 1))
z = mg.add_field('topographic__elevation', mg.node_x + mg.node_y, at = 'node')
fa = FlowAccumulator(mg)
fa.run_one_step()
drainage_area = mg.at_node['drainage_area']
drained_area = np.sum(drainage_area[mg.boundary_nodes])
core_area = np.sum(mg.cell_area_at_node[mg.core_nodes])
assert_equal(drained_area, core_area)示例2: test_accumulated_area_closes
def test_accumulated_area_closes():
"""Check that accumulated area is area of core nodes."""
fds = ["Steepest", "D8", "MFD", "DINF"]
for fd in fds:
mg = RasterModelGrid((10, 10), spacing=(1, 1))
z = mg.add_field("topographic__elevation", mg.node_x + mg.node_y, at="node")
fa = FlowAccumulator(mg)
fa.run_one_step()
drainage_area = mg.at_node["drainage_area"]
drained_area = np.sum(drainage_area[mg.boundary_nodes])
core_area = np.sum(mg.cell_area_at_node[mg.core_nodes])
assert drained_area == core_area示例3: test_flat_grids_all_directors
def test_flat_grids_all_directors():
for fd in [
"FlowDirectorMFD",
"FlowDirectorSteepest",
"FlowDirectorD8",
"FlowDirectorDINF",
]:
mg = RasterModelGrid((10, 10))
z = mg.add_zeros("topographic__elevation", at="node")
fa = FlowAccumulator(mg, flow_director=fd)
fa.run_one_step()
true_da = np.zeros(mg.size("node"))
true_da[mg.core_nodes] = 1.0
assert_array_equal(true_da, fa.drainage_area)
del mg, z, fa示例4: test_field_name_array_float_case5
def test_field_name_array_float_case5():
"""Topography as array, runoff rate as field name"""
mg = RasterModelGrid((5,4), spacing=(1, 1))
topographic__elevation = np.array([0., 0., 0., 0.,
0., 21., 10., 0.,
0., 31., 20., 0.,
0., 32., 30., 0.,
0., 0., 0., 0.])
runoff_rate = ([1., 1., 1., 1.,
2., 2., 2., 2.,
3., 3., 3., 3.,
4., 4., 4., 4.,
5., 5., 5., 5.])
_ = mg.add_field('node', 'topographic__elevation', topographic__elevation)
_ = mg.add_field('node', 'runoff_rate', runoff_rate)
mg.set_closed_boundaries_at_grid_edges(True, True, True, False)
fa = FlowAccumulator(mg, 'topographic__elevation', runoff_rate='runoff_rate')
fa.run_one_step()
reciever = np.array([ 0, 1, 2, 3,
4, 1, 2, 7,
8, 10, 6, 11,
12, 14, 10, 15,
16, 17, 18, 19])
da = np.array([ 0., 1., 5., 0.,
0., 1., 5., 0.,
0., 1., 4., 0.,
0., 1., 2., 0.,
0., 0., 0., 0.])
q = np.array([ 0., 2., 16., 0., # KRB double checked these numbers by hand 5/15/18 - OK
0., 2., 16., 0.,
0., 3., 14., 0.,
0., 4., 8., 0.,
0., 0., 0., 0.])
assert_array_equal(mg.at_node['flow__receiver_node'], reciever)
assert_array_equal(mg.at_node['drainage_area'], da)
assert_array_equal(mg.at_node['surface_water__discharge'], q)示例5: test_error_for_to_many_with_depression
def test_error_for_to_many_with_depression():
"""Check that an error is thrown when to_many methods started DF."""
mg0 = RasterModelGrid((10, 10), spacing=(1, 1))
z0 = mg0.add_field(
"topographic__elevation", mg0.node_x ** 2 + mg0.node_y ** 2, at="node"
)
mg1 = RasterModelGrid((10, 10), spacing=(1, 1))
z1 = mg1.add_field(
"topographic__elevation", mg1.node_x ** 2 + mg1.node_y ** 2, at="node"
)
with pytest.raises(NotImplementedError):
FlowAccumulator(
mg0, flow_director="MFD", depression_finder="DepressionFinderAndRouter"
)
with pytest.raises(NotImplementedError):
FlowAccumulator(
mg0, flow_director="DINF", depression_finder="DepressionFinderAndRouter"
)
fa0 = FlowAccumulator(mg0, flow_director="MFD")
fa0.run_one_step()
with pytest.raises(NotImplementedError):
DepressionFinderAndRouter(mg0)
fa1 = FlowAccumulator(mg1, flow_director="DINF")
fa1.run_one_step()
with pytest.raises(NotImplementedError):
DepressionFinderAndRouter(mg1)示例6: test_field_name_array_float_case4
def test_field_name_array_float_case4():
"""Topography as array, runoff rate as float"""
mg = RasterModelGrid((5,4), spacing=(1, 1))
topographic__elevation = np.array([0., 0., 0., 0.,
0., 21., 10., 0.,
0., 31., 20., 0.,
0., 32., 30., 0.,
0., 0., 0., 0.])
_ = mg.add_field('node', 'topographic__elevation', topographic__elevation)
mg.set_closed_boundaries_at_grid_edges(True, True, True, False)
fa = FlowAccumulator(mg, topographic__elevation, runoff_rate=10.)
assert_array_equal(mg.at_node['water__unit_flux_in'], 10.*np.ones(mg.size('node')))
fa.run_one_step()
reciever = np.array([ 0, 1, 2, 3,
4, 1, 2, 7,
8, 10, 6, 11,
12, 14, 10, 15,
16, 17, 18, 19])
da = np.array([ 0., 1., 5., 0.,
0., 1., 5., 0.,
0., 1., 4., 0.,
0., 1., 2., 0.,
0., 0., 0., 0.])
q = np.array([ 0., 10., 50., 0.,
0., 10., 50., 0.,
0., 10., 40., 0.,
0., 10., 20., 0.,
0., 0., 0., 0.])
assert_array_equal(mg.at_node['flow__receiver_node'], reciever)
assert_array_equal(mg.at_node['drainage_area'], da)
assert_array_equal(mg.at_node['surface_water__discharge'], q)示例7: test_fields
def test_fields():
"""Check to make sure the right fields have been created.
Check that the sizes are also correct.
"""
mg = RasterModelGrid((10, 10), spacing=(1, 1))
_ = mg.add_field("topographic__elevation", mg.node_x + mg.node_y, at="node")
fa = FlowAccumulator(mg)
fa.run_one_step()
assert sorted(list(mg.at_node.keys())) == [
"drainage_area",
"flow__data_structure_delta",
"flow__link_to_receiver_node",
"flow__receiver_node",
"flow__sink_flag",
"flow__upstream_node_order",
"surface_water__discharge",
"topographic__elevation",
"topographic__steepest_slope",
"water__unit_flux_in",
]
assert sorted(list(mg.at_link.keys())) == ["flow__data_structure_D"]
mg2 = RasterModelGrid((10, 10), spacing=(1, 1))
_ = mg2.add_field("topographic__elevation", mg2.node_x + mg2.node_y, at="node")
fa2 = FlowAccumulator(mg2, flow_director="MFD")
fa2.run_one_step()
assert sorted(list(mg2.at_node.keys())) == [
"drainage_area",
"flow__data_structure_delta",
"flow__link_to_receiver_node",
"flow__receiver_node",
"flow__receiver_proportions",
"flow__sink_flag",
"flow__upstream_node_order",
"surface_water__discharge",
"topographic__elevation",
"topographic__steepest_slope",
"water__unit_flux_in",
]
assert sorted(list(mg2.at_link.keys())) == ["flow__data_structure_D"]示例8: test_error_for_to_many_with_depression
def test_error_for_to_many_with_depression():
"""Check that an error is thrown when to_many methods started DF."""
mg0 = RasterModelGrid((10,10), spacing=(1, 1))
z0 = mg0.add_field('topographic__elevation', mg0.node_x**2 + mg0.node_y**2, at = 'node')
mg1 = RasterModelGrid((10,10), spacing=(1, 1))
z1 = mg1.add_field('topographic__elevation', mg1.node_x**2 + mg1.node_y**2, at = 'node')
assert_raises(ValueError, FlowAccumulator, mg0, flow_director='MFD', depression_finder='DepressionFinderAndRouter')
assert_raises(ValueError, FlowAccumulator, mg0, flow_director='DINF', depression_finder='DepressionFinderAndRouter')
fa0 = FlowAccumulator(mg0, flow_director='MFD')
fa0.run_one_step()
assert_raises(ValueError, DepressionFinderAndRouter, mg0)
fa1 = FlowAccumulator(mg1, flow_director='DINF')
fa1.run_one_step()
assert_raises(ValueError, DepressionFinderAndRouter, mg1)示例9: test_fields
def test_fields():
"""Check to make sure the right fields have been created.
Check that the sizes are also correct.
"""
mg = RasterModelGrid((10,10), spacing=(1, 1))
_ = mg.add_field('topographic__elevation', mg.node_x + mg.node_y, at = 'node')
fa = FlowAccumulator(mg)
fa.run_one_step()
assert_equal(sorted(list(mg.at_node.keys())), ['drainage_area',
'flow__data_structure_delta',
'flow__link_to_receiver_node',
'flow__receiver_node',
'flow__sink_flag',
'flow__upstream_node_order',
'surface_water__discharge',
'topographic__elevation',
'topographic__steepest_slope',
'water__unit_flux_in'])
assert_equal(sorted(list(mg.at_link.keys())), ['flow__data_structure_D'])
mg2 = RasterModelGrid((10,10), spacing=(1, 1))
_ = mg2.add_field('topographic__elevation', mg2.node_x + mg2.node_y, at = 'node')
fa2 = FlowAccumulator(mg2, flow_director='MFD')
fa2.run_one_step()
assert_equal(sorted(list(mg2.at_node.keys())), ['drainage_area',
'flow__data_structure_delta',
'flow__link_to_receiver_node',
'flow__links_to_receiver_nodes',
'flow__receiver_node',
'flow__receiver_nodes',
'flow__receiver_proportions',
'flow__sink_flag',
'flow__upstream_node_order',
'surface_water__discharge',
'topographic__elevation',
'topographic__steepest_slope',
'water__unit_flux_in'])
assert_equal(sorted(list(mg2.at_link.keys())), ['flow__data_structure_D'])示例10: test_director_adding_methods_are_equivalent_D8
def test_director_adding_methods_are_equivalent_D8():
"""Check that different methods to specifying the director are the same."""
mg0 = RasterModelGrid((10, 10), spacing=(1, 1))
z0 = mg0.add_field(
"topographic__elevation", mg0.node_x ** 2 + mg0.node_y ** 2, at="node"
)
fa0 = FlowAccumulator(mg0, flow_director="D8")
fa0.run_one_step()
mg1 = RasterModelGrid((10, 10), spacing=(1, 1))
z1 = mg1.add_field(
"topographic__elevation", mg1.node_x ** 2 + mg1.node_y ** 2, at="node"
)
fa1 = FlowAccumulator(mg1, flow_director="FlowDirectorD8")
fa1.run_one_step()
mg2 = RasterModelGrid((10, 10), spacing=(1, 1))
z2 = mg2.add_field(
"topographic__elevation", mg2.node_x ** 2 + mg2.node_y ** 2, at="node"
)
fa2 = FlowAccumulator(mg2, flow_director=FlowDirectorD8)
fa2.run_one_step()
mg3 = RasterModelGrid((10, 10), spacing=(1, 1))
z3 = mg3.add_field(
"topographic__elevation", mg3.node_x ** 2 + mg3.node_y ** 2, at="node"
)
fd = FlowDirectorD8(mg3)
fa3 = FlowAccumulator(mg3, flow_director=fd)
fa3.run_one_step()
for key in mg0.at_node.keys():
assert_array_equal(mg0.at_node[key], mg1.at_node[key])
assert_array_equal(mg1.at_node[key], mg2.at_node[key])
assert_array_equal(mg2.at_node[key], mg3.at_node[key])示例11: test_flow_accumulator_properties
def test_flow_accumulator_properties():
mg = RasterModelGrid((5, 5), spacing=(1, 1))
z = mg.add_field("topographic__elevation", mg.node_x + mg.node_y, at="node")
fa = FlowAccumulator(mg)
fa.run_one_step()
node_drainage_area = np.array(
[
0.,
3.,
3.,
3.,
0.,
0.,
3.,
3.,
3.,
0.,
0.,
2.,
2.,
2.,
0.,
0.,
1.,
1.,
1.,
0.,
0.,
0.,
0.,
0.,
0.,
]
)
node_order_upstream = np.array(
[
0,
1,
6,
11,
16,
2,
7,
12,
17,
3,
8,
13,
18,
4,
5,
9,
10,
14,
15,
19,
20,
21,
22,
23,
24,
]
)
assert_array_equal(fa.node_order_upstream, node_order_upstream)
assert_array_equal(fa.node_water_discharge, node_drainage_area)
assert_array_equal(fa.node_drainage_area, node_drainage_area)示例12: test_hex_mfd
def test_hex_mfd():
mg = HexModelGrid(5, 3)
z = mg.add_field("topographic__elevation", mg.node_x + mg.node_y, at="node")
fa = FlowAccumulator(mg, flow_director="MFD")
fa.run_one_step()示例13: test_field_name_array_float_case6
def test_field_name_array_float_case6():
"""Topography as array, runoff rate as array"""
mg = RasterModelGrid((5, 4), xy_spacing=(1, 1))
topographic__elevation = np.array(
[
0.0,
0.0,
0.0,
0.0,
0.0,
21.0,
10.0,
0.0,
0.0,
31.0,
20.0,
0.0,
0.0,
32.0,
30.0,
0.0,
0.0,
0.0,
0.0,
0.0,
]
)
runoff_rate = [
1.0,
1.0,
1.0,
1.0,
2.0,
2.0,
2.0,
2.0,
3.0,
3.0,
3.0,
3.0,
4.0,
4.0,
4.0,
4.0,
5.0,
5.0,
5.0,
5.0,
]
mg.add_field("node", "topographic__elevation", topographic__elevation)
mg.set_closed_boundaries_at_grid_edges(True, True, True, False)
fa = FlowAccumulator(mg, topographic__elevation, runoff_rate=runoff_rate)
fa.run_one_step()
reciever = np.array(
[0, 1, 2, 3, 4, 1, 2, 7, 8, 10, 6, 11, 12, 14, 10, 15, 16, 17, 18, 19]
)
da = np.array(
[
0.0,
1.0,
5.0,
0.0,
0.0,
1.0,
5.0,
0.0,
0.0,
1.0,
4.0,
0.0,
0.0,
1.0,
2.0,
0.0,
0.0,
0.0,
0.0,
0.0,
]
)
q = np.array(
[
0.0,
2.0,
16.0,
0.0, # KRB double checked these numbers by hand 5/15/18 - OK
0.0,
2.0,
16.0,
0.0,
0.0,
3.0,
14.0,
#.........这里部分代码省略.........
示例14: test_director_adding_methods_are_equivalent_D8
def test_director_adding_methods_are_equivalent_D8():
"""Check that different methods to specifying the director are the same."""
mg0 = RasterModelGrid((10, 10), xy_spacing=(1, 1))
mg0.add_field(
"topographic__elevation", mg0.node_x ** 2 + mg0.node_y ** 2, at="node"
)
fa0 = FlowAccumulator(mg0, flow_director="D8")
fa0.run_one_step()
mg1 = RasterModelGrid((10, 10), xy_spacing=(1, 1))
mg1.add_field(
"topographic__elevation", mg1.node_x ** 2 + mg1.node_y ** 2, at="node"
)
fa1 = FlowAccumulator(mg1, flow_director="FlowDirectorD8")
fa1.run_one_step()
mg2 = RasterModelGrid((10, 10), xy_spacing=(1, 1))
mg2.add_field(
"topographic__elevation", mg2.node_x ** 2 + mg2.node_y ** 2, at="node"
)
fa2 = FlowAccumulator(mg2, flow_director=FlowDirectorD8)
fa2.run_one_step()
mg3 = RasterModelGrid((10, 10), xy_spacing=(1, 1))
mg3.add_field(
"topographic__elevation", mg3.node_x ** 2 + mg3.node_y ** 2, at="node"
)
fd = FlowDirectorD8(mg3)
fa3 = FlowAccumulator(mg3, flow_director=fd)
fa3.run_one_step()
for loc in ["node", "link", "grid"]:
for key in mg0[loc].keys():
if loc == "grid":
assert_array_equal(mg0[loc][key][0], mg1[loc][key][0])
assert_array_equal(mg1[loc][key][0], mg2[loc][key][0])
assert_array_equal(mg2[loc][key][0], mg3[loc][key][0])
else:
assert_array_equal(mg0[loc][key], mg1[loc][key])
assert_array_equal(mg1[loc][key], mg2[loc][key])
assert_array_equal(mg2[loc][key], mg3[loc][key])示例15: test_field_name_array_float_case4
def test_field_name_array_float_case4():
"""Topography as array, runoff rate as float"""
mg = RasterModelGrid((5, 4), xy_spacing=(1, 1))
topographic__elevation = np.array(
[
0.0,
0.0,
0.0,
0.0,
0.0,
21.0,
10.0,
0.0,
0.0,
31.0,
20.0,
0.0,
0.0,
32.0,
30.0,
0.0,
0.0,
0.0,
0.0,
0.0,
]
)
mg.add_field("node", "topographic__elevation", topographic__elevation)
mg.set_closed_boundaries_at_grid_edges(True, True, True, False)
fa = FlowAccumulator(mg, topographic__elevation, runoff_rate=10.0)
assert_array_equal(
mg.at_node["water__unit_flux_in"], 10.0 * np.ones(mg.size("node"))
)
fa.run_one_step()
reciever = np.array(
[0, 1, 2, 3, 4, 1, 2, 7, 8, 10, 6, 11, 12, 14, 10, 15, 16, 17, 18, 19]
)
da = np.array(
[
0.0,
1.0,
5.0,
0.0,
0.0,
1.0,
5.0,
0.0,
0.0,
1.0,
4.0,
0.0,
0.0,
1.0,
2.0,
0.0,
0.0,
0.0,
0.0,
0.0,
]
)
q = np.array(
[
0.0,
10.0,
50.0,
0.0,
0.0,
10.0,
50.0,
0.0,
0.0,
10.0,
40.0,
0.0,
0.0,
10.0,
20.0,
0.0,
0.0,
0.0,
0.0,
0.0,
]
)
assert_array_equal(mg.at_node["flow__receiver_node"], reciever)
assert_array_equal(mg.at_node["drainage_area"], da)
assert_array_equal(mg.at_node["surface_water__discharge"], q)