def quick_set_quantity(
quantity_name,
quantity_data,
domain,
quantity_clip_range,
quantity_mean,
quantity_additions,
location="vertices",
mean_type="mean",
):
"""Convenience function to set the quantities
and reduce boilerplate code.
Sets the quantity + takes care of quantity additions
"""
# Make the function
quantity_function = qs.composite_quantity_setting_function(
quantity_data, domain, quantity_clip_range, nan_treatment="fall_through", default_k_nearest_neighbours=2
)
# Spatially average the function if required
if quantity_mean is not None:
grid_spacing = [quantity_mean, quantity_mean]
quantity_function = make_spatially_averaged_function(
quantity_function, domain, approx_grid_spacing=grid_spacing, averaging=mean_type
)
# Set the quantity
domain.set_quantity(quantity_name, quantity_function, location=location)
# Treat additions
quantity_addition_function = qs.composite_quantity_setting_function(
quantity_additions, domain, nan_treatment="fall_through"
)
domain.add_quantity(quantity_name, quantity_addition_function, location=location)
def quick_set_quantity(quantity_name, quantity_data, domain,
quantity_clip_range, quantity_mean,
quantity_additions, location='vertices',
mean_type='mean'):
"""Convenience function to set the quantities
and reduce boilerplate code.
Sets the quantity + takes care of quantity additions
"""
# Make the function
quantity_function = \
qs.composite_quantity_setting_function(
quantity_data,
domain,
quantity_clip_range,
nan_treatment='fall_through',
default_k_nearest_neighbours=2)
# Spatially average the function if required
if quantity_mean is not None:
grid_spacing = [quantity_mean, quantity_mean]
quantity_function = make_spatially_averaged_function(
quantity_function, domain, approx_grid_spacing=grid_spacing,
averaging=mean_type)
# Set the quantity
domain.set_quantity(quantity_name, quantity_function,
location=location)
# Treat additions
quantity_addition_function = \
qs.composite_quantity_setting_function(
quantity_additions, domain, nan_treatment='fall_through')
domain.add_quantity(quantity_name, quantity_addition_function,
location=location)
def should_fail_1():
F = qs.composite_quantity_setting_function(
[[trenchPoly, f0], ['All', 'PointData_ElevTest.tif']],
domain,
clip_range=[[-500., -1000.], [-1.0e+100, 1.0e+100]],
verbose=False)
return
def should_fail_1():
F=qs.composite_quantity_setting_function(
[[trenchPoly, f0], ['All', 'PointData_ElevTest.tif']],
domain,
clip_range = [[ -500., -1000.], [-1.0e+100, 1.0e+100]],
verbose=False)
return
def should_fail():
F = qs.composite_quantity_setting_function(
[['All', f0], ['All', 'PointData_ElevTest.tif']],
domain,
verbose=False)
# Need to call it to get the error
F(numpy.array([3.]), numpy.array([3.]))
return
def should_fail():
F=qs.composite_quantity_setting_function(
[['All', f0], ['All', 'PointData_ElevTest.tif']],
domain,
verbose=False)
# Need to call it to get the error
F(numpy.array([3.]), numpy.array([3.]))
return
#------------------------------------------------------------------------------
# Setup initial conditions
#------------------------------------------------------------------------------
domain.set_quantity('stage', 0.0)
# Friction -- 2 options
variable_friction = True
if not variable_friction:
# Constant friction
domain.set_quantity('friction', 0.02)
else:
# Set friction to 0.02 on roads, 0.04 elsewhere
road_polygon = anuga.read_polygon('Road/RoadPolygon.csv')
friction_function = qs.composite_quantity_setting_function(
[ [road_polygon, 0.02], ['All', 0.04] ],
domain)
domain.set_quantity('friction', friction_function)
# Elevation
if houses_as_holes:
domain.set_quantity('elevation', filename='topography1.pts',
use_cache=use_cache,
verbose=verbose)
else:
domain.set_quantity('elevation', filename='topography1.pts',
use_cache=use_cache,
verbose=verbose, location='vertices')
# Add house_height inside houses
house_addition_function = qs.composite_quantity_setting_function(
#------------------------------------------------------------------------------
# Setup initial conditions
#------------------------------------------------------------------------------
domain.set_quantity('stage', 0.0)
# Friction -- 2 options
variable_friction = True
if not variable_friction:
# Constant friction
domain.set_quantity('friction', 0.02)
else:
# Set friction to 0.02 on roads, 0.04 elsewhere
road_polygon = anuga.read_polygon('Road/RoadPolygon.csv')
friction_function = qs.composite_quantity_setting_function(
[[road_polygon, 0.02], ['All', 0.04]], domain)
domain.set_quantity('friction', friction_function)
# Elevation
if houses_as_holes:
domain.set_quantity('elevation',
filename='topography1.pts',
use_cache=use_cache,
verbose=verbose)
else:
domain.set_quantity('elevation',
filename='topography1.pts',
use_cache=use_cache,
verbose=verbose,
location='vertices')
def test_composite_quantity_setting_function(self):
# Test the composite_quantity_setting_function
domain = self.create_domain(1.0, 0.0)
# Make a raster from the elevation data
from anuga.utilities import plot_utils as util
xs = domain.centroid_coordinates[:, 0] + domain.geo_reference.xllcorner
ys = domain.centroid_coordinates[:, 1] + domain.geo_reference.yllcorner
elev = domain.quantities['elevation'].centroid_values
allDat = numpy.vstack([xs, ys, elev]).transpose()
util.Make_Geotif(allDat,
output_quantities=['ElevTest'],
EPSG_CODE=32756,
output_dir='.',
CellSize=1.,
k_nearest_neighbours=1)
# Make a polygon-point pair which we use to set elevation in a 'channel'
trenchPoly = [[minX + 40., minY], [minX + 40., minY + 100.],
[minX + 60., minY + 100.], [minX + 60., minY]]
#################################################################
# This example uses a constant, and a raster, to set the quantity
F = qs.composite_quantity_setting_function(
[[trenchPoly, -1000.], ['Extent', 'PointData_ElevTest.tif']],
domain,
verbose=False)
# Points where we test the function
testPts_X = numpy.array([50., 3.])
testPts_Y = numpy.array([1., 20.])
fitted = F(testPts_X, testPts_Y)
# The fitted value in the trench should be -1000.
assert (fitted[0] == -1000.)
# Find the nearest domain point to the second test point
# This will have been used in constructing the elevation raster
nearest = ((domain.centroid_coordinates[:, 0] - 3.)**2 +
(domain.centroid_coordinates[:, 1] - 20.)**2).argmin()
nearest_x = domain.centroid_coordinates[nearest, 0]
assert (numpy.allclose(fitted[1], -nearest_x / 150.))
#################################################################
# This example uses a constant, and a raster, to set the quantity, and
# applies the min/max bound
F = qs.composite_quantity_setting_function(
[[trenchPoly, -1000.], ['Extent', 'PointData_ElevTest.tif']],
domain,
clip_range=[[-500., 1.0e+100], [-1.0e+100, 1.0e+100]],
verbose=False)
# Points where we test the function
testPts_X = numpy.array([50., 3.])
testPts_Y = numpy.array([1., 20.])
fitted = F(testPts_X, testPts_Y)
# The fitted value in the trench should be -500, because of clipping
assert (fitted[0] == -500.)
# Find the nearest domain point to the second test point
# This will have been used in constructing the elevation raster
nearest = ((domain.centroid_coordinates[:, 0] - 3.)**2 +
(domain.centroid_coordinates[:, 1] - 20.)**2).argmin()
nearest_x = domain.centroid_coordinates[nearest, 0]
assert (numpy.allclose(fitted[1], -nearest_x / 150.))
#########################################################################
# This example uses a function, and a raster, to set the quantity
def f0(x, y):
return x / 10.
F = qs.composite_quantity_setting_function(
[[trenchPoly, f0], ['Extent', 'PointData_ElevTest.tif']],
domain,
verbose=False)
fitted = F(testPts_X, testPts_Y)
# Now the fitted value in the trench should be determined by f0
assert (numpy.allclose(fitted[0], 50. / 10.))
# The second test point should be as before
nearest = ((domain.centroid_coordinates[:, 0] - 3.)**2 +
(domain.centroid_coordinates[:, 1] - 20.)**2).argmin()
nearest_x = domain.centroid_coordinates[nearest, 0]
assert (numpy.allclose(fitted[1], -nearest_x / 150.))
##########################################################################
# This example uses 'All' as a polygon
F = qs.composite_quantity_setting_function(
[['All', f0], [None, 'PointData_ElevTest.tif']],
domain,
verbose=False)
fitted = F(testPts_X, testPts_Y)
# Now the fitted value in the trench should be determined by f0
assert (numpy.allclose(fitted[0], 50. / 10.))
assert (numpy.allclose(fitted[1], 3. / 10.))
###########################################################################
# This example should fail
def should_fail():
F = qs.composite_quantity_setting_function(
[['All', f0], ['All', 'PointData_ElevTest.tif']],
domain,
verbose=False)
# Need to call it to get the error
F(numpy.array([3.]), numpy.array([3.]))
return
self.assertRaises(Exception, lambda: should_fail())
###########################################################################
# This example should fail (since the clip_range minimum >= maximum)
def should_fail_1():
F = qs.composite_quantity_setting_function(
[[trenchPoly, f0], ['All', 'PointData_ElevTest.tif']],
domain,
clip_range=[[-500., -1000.], [-1.0e+100, 1.0e+100]],
verbose=False)
return
self.assertRaises(Exception, lambda: should_fail_1())
###########################################################################
# This example features a function with some nan return values, and uses
# the nan_interpolation_region_polygon to try to fix it
def f0(x, y):
output = x / 10.
output[0] = numpy.nan
return output
F = qs.composite_quantity_setting_function(
[[trenchPoly, f0], ['Extent', 'PointData_ElevTest.tif']],
domain,
nan_treatment='fall_through',
nan_interpolation_region_polygon=[trenchPoly],
default_k_nearest_neighbours=3,
default_raster_interpolation='bilinear',
verbose=False)
# Points where we test the function. We deliberately use many points with x=50,
# which happens to ensure that the nan value is replaced with the same
# value it would have had anyway
testPts_X = numpy.array([50., 50.00, 50., 50., 97., 51., 3.])
testPts_Y = numpy.array([1., 2., 3., 4, 20., 50., 60.])
fitted = F(testPts_X, testPts_Y)
# We should have no nan values
assert (sum(fitted != fitted) == 0)
# Now the fitted value in the trench should be determined by f0 because
# the re-interpolation of nan values was designed to ensure it
assert (numpy.allclose(fitted[0], 50. / 10.))
###########################################################################
# This example features a function with some nan return values, and uses
# the nan_interpolation_region_polygon to try to fix it
# Make a polygon-point pair which we use to set elevation in a 'channel'
innerTrenchPoly = [[minX + 45., minY + 45.], [minX + 45., minY + 55.],
[minX + 55., minY + 55.], [minX + 55., minY + 45.]]
def f_nan(x, y):
output = x * 0 + numpy.nan
return (output)
F = qs.composite_quantity_setting_function(
[[innerTrenchPoly, f_nan], [trenchPoly, f0],
['Extent', 'PointData_ElevTest.tif']],
domain,
nan_treatment='fall_through',
nan_interpolation_region_polygon=[trenchPoly],
default_k_nearest_neighbours=3,
default_raster_interpolation='bilinear',
verbose=False)
# Points where we test the function. We deliberately use many points with x=50,
# which happens to ensure that the nan value is replaced with the same
# value it would have had anyway
testPts_X = numpy.array([50., 50.00, 50., 50., 97., 51., 3.])
testPts_Y = numpy.array([1., 2., 3., 4, 20., 50., 60.])
fitted = F(testPts_X, testPts_Y)
# We should have no nan values
assert (sum(fitted != fitted) == 0)
# Now the fitted value in the trench should be determined by f0 because
# the re-interpolation of nan values was designed to ensure it
assert (numpy.allclose(fitted[0], 50. / 10.))
return
def start_sim(run_id, Runs, scenario_name, Scenario, session, **kwargs):
yieldstep = kwargs['yieldstep']
finaltime = kwargs['finaltime']
logger = logging.getLogger(run_id)
max_triangle_area = kwargs['max_triangle_area']
logger.info('Starting hydrata_project')
if run_id == 'local_run':
base_dir = os.getcwd()
else:
base_dir = os.getcwd() + '/base_dir/%s/' % run_id
outname = run_id
meshname = base_dir + 'outputs/' + run_id + '.msh'
def get_filename(data_type, file_type):
files = os.listdir('%sinputs/%s' % (base_dir, data_type))
filename = '%sinputs/%s/%s' % (
base_dir, data_type, [f for f in files if f[-4:] == file_type][0])
return filename
boundary_data_filename = get_filename('boundary_data', '.shp')
elevation_data_filename = get_filename('elevation_data', '.tif')
try:
structures_filename = get_filename('structures', '.shp')
except OSError as e:
structures_filename = None
try:
rain_data_filename = get_filename('rain_data', '.shp')
except OSError as e:
rain_data_filename = None
try:
inflow_data_filename = get_filename('inflow_data', '.shp')
except OSError as e:
inflow_data_filename = None
try:
friction_data_filename = get_filename('friction_data', '.shp')
except OSError as e:
friction_data_filename = None
logger.info('boundary_data_filename: %s' % boundary_data_filename)
logger.info('structures_filename: %s' % structures_filename)
logger.info('rain_data_filename: %s' % rain_data_filename)
logger.info('inflow_data_filename: %s' % inflow_data_filename)
logger.info('friction_data_filename: %s' % friction_data_filename)
logger.info('elevation_data_filename: %s' % elevation_data_filename)
# create a list of project files
vector_filenames = [
boundary_data_filename, structures_filename, rain_data_filename,
inflow_data_filename, friction_data_filename
]
# set the projection system for ANUGA calculations from the geotiff elevation data
elevation_data_gdal = gdal.Open(elevation_data_filename)
project_spatial_ref = osr.SpatialReference()
project_spatial_ref.ImportFromWkt(elevation_data_gdal.GetProjectionRef())
project_spatial_ref_epsg_code = int(
project_spatial_ref.GetAttrValue("AUTHORITY", 1))
# check the spatial reference system of the project files matches that of the calculation
for filename in vector_filenames:
if filename:
prj_text = open(filename[:-4] + '.prj').read()
srs = osr.SpatialReference()
srs.ImportFromESRI([prj_text])
srs.AutoIdentifyEPSG()
logger.info('filename is: %s' % filename)
logger.info('EPSG is: %s' % srs.GetAuthorityCode(None))
if str(srs.GetAuthorityCode(None)) != str(
project_spatial_ref_epsg_code):
logger.warning('warning spatial refs are not maching: %s, %s' %
(srs.GetAuthorityCode(None),
project_spatial_ref_epsg_code))
logger.info('Setting up structures...')
if structures_filename:
structures = []
logger.info('processing structures from :%s' % structures_filename)
ogr_shapefile = ogr.Open(structures_filename)
ogr_layer = ogr_shapefile.GetLayer(0)
ogr_layer_feature = ogr_layer.GetNextFeature()
while ogr_layer_feature:
structure = json.loads(ogr_layer_feature.GetGeometryRef().
ExportToJson())['coordinates'][0]
structures.append(structure)
ogr_layer_feature = None
ogr_layer_feature = ogr_layer.GetNextFeature()
logger.info('structures: %s' % structures)
else:
logger.warning('warning: no structures found.')
structures = None
logger.info('Setting up friction...')
frictions = []
if friction_data_filename:
logger.info('processing frictions from :%s' % friction_data_filename)
ogr_shapefile = ogr.Open(friction_data_filename)
ogr_layer = ogr_shapefile.GetLayer(0)
ogr_layer_feature = ogr_layer.GetNextFeature()
while ogr_layer_feature:
friction_poly = json.loads(ogr_layer_feature.GetGeometryRef().
ExportToJson())['coordinates'][0]
friction_value = float(ogr_layer_feature.GetField('mannings'))
friction_couple = [friction_poly, friction_value]
frictions.append(friction_couple)
ogr_layer_feature = None
ogr_layer_feature = ogr_layer.GetNextFeature()
frictions.append(['All', 0.04])
logger.info('frictions: %s' % frictions)
else:
frictions.append(['All', 0.04])
logger.info('warning: no frictions found.')
logger.info('Setting up boundary conditions...')
ogr_shapefile = ogr.Open(boundary_data_filename)
ogr_layer = ogr_shapefile.GetLayer(0)
ogr_layer_definition = ogr_layer.GetLayerDefn()
logger.info('ogr_layer_definition.GetGeomType: %s' %
ogr_layer_definition.GetGeomType())
boundary_tag_index = 0
bdy_tags = {}
bdy = {}
ogr_layer_feature = ogr_layer.GetNextFeature()
while ogr_layer_feature:
boundary_tag_key = ogr_layer_feature.GetField('bdy_tag_k')
boundary_tag_value = ogr_layer_feature.GetField('bdy_tag_v')
bdy_tags[boundary_tag_key] = [
boundary_tag_index * 2, boundary_tag_index * 2 + 1
]
bdy[boundary_tag_key] = boundary_tag_value
geom = ogr_layer_feature.GetGeometryRef().GetPoints()
ogr_layer_feature = None
ogr_layer_feature = ogr_layer.GetNextFeature()
boundary_tag_index = boundary_tag_index + 1
logger.info('bdy_tags: %s' % bdy_tags)
logger.info('bdy: %s' % bdy)
boundary_data = su.read_polygon(boundary_data_filename)
create_mesh_from_regions(boundary_data,
boundary_tags=bdy_tags,
maximum_triangle_area=max_triangle_area,
interior_regions=None,
interior_holes=structures,
filename=meshname,
use_cache=False,
verbose=True)
domain = Domain(meshname, use_cache=False, verbose=True)
domain.set_name(outname)
domain.set_datadir(base_dir + '/outputs')
logger.info(domain.statistics())
poly_fun_pairs = [['Extent', elevation_data_filename.encode("utf-8")]]
topography_function = qs.composite_quantity_setting_function(
poly_fun_pairs,
domain,
nan_treatment='exception',
)
friction_function = qs.composite_quantity_setting_function(
frictions, domain)
domain.set_quantity('friction', friction_function, verbose=True)
domain.set_quantity('stage', 0.0)
domain.set_quantity('elevation',
topography_function,
verbose=True,
alpha=0.99)
domain.set_minimum_storable_height(0.005)
logger.info('Applying rainfall...')
if rain_data_filename:
ogr_shapefile = ogr.Open(rain_data_filename)
ogr_layer = ogr_shapefile.GetLayer(0)
rainfall = 0
ogr_layer_feature = ogr_layer.GetNextFeature()
while ogr_layer_feature:
rainfall = float(ogr_layer_feature.GetField('rate_mm_hr'))
polygon = su.read_polygon(rain_data_filename)
logger.info("applying Polygonal_rate_operator with rate, polygon:")
logger.info(rainfall)
logger.info(polygon)
Polygonal_rate_operator(domain,
rate=rainfall,
factor=1.0e-6,
polygon=polygon,
default_rate=0.0)
ogr_layer_feature = None
ogr_layer_feature = ogr_layer.GetNextFeature()
logger.info('Applying surface inflows...')
if inflow_data_filename:
ogr_shapefile = ogr.Open(inflow_data_filename)
ogr_layer = ogr_shapefile.GetLayer(0)
ogr_layer_definition = ogr_layer.GetLayerDefn()
ogr_layer_feature = ogr_layer.GetNextFeature()
while ogr_layer_feature:
in_fixed = float(ogr_layer_feature.GetField('in_fixed'))
line = ogr_layer_feature.GetGeometryRef().GetPoints()
logger.info("applying Inlet_operator with line, in_fixed:")
logger.info(line)
logger.info(in_fixed)
Inlet_operator(domain, line, in_fixed, verbose=False)
ogr_layer_feature = None
ogr_layer_feature = ogr_layer.GetNextFeature()
logger.info('Applying Boundary Conditions...')
logger.info('Available boundary tags: %s' % domain.get_boundary_tags())
Br = anuga.Reflective_boundary(domain)
Bd = anuga.Dirichlet_boundary([0.0, 0.0, 0.0])
Bt = anuga.Transmissive_boundary(domain)
for key, value in bdy.iteritems():
if value == 'Br':
bdy[key] = Br
elif value == 'Bd':
bdy[key] = Bd
elif value == 'Bt':
bdy[key] = Bt
else:
logger.info(
'No matching boundary condition exists - please check your shapefile attributes in: %s'
% boundary_data_filename)
# set a default value for exterior & interior boundary if it is not already set
try:
bdy['exterior']
except KeyError:
bdy['exterior'] = Br
try:
bdy['interior']
except KeyError:
bdy['interior'] = Br
logger.info('bdy: %s' % bdy)
domain.set_boundary(bdy)
domain = distribute(domain)
logger.info('Beginning evolve phase...')
for t in domain.evolve(yieldstep, finaltime):
domain.write_time()
print domain.timestepping_statistics()
logger.info(domain.timestepping_statistics(track_speeds=True))
percentage_complete = round(domain.time / domain.finaltime, 3) * 100
logger.info('%s percent complete' % percentage_complete)
if run_id != 'local_run':
write_percentage_complete(run_id, Runs, scenario_name, Scenario,
session, percentage_complete)
domain.sww_merge(delete_old=True)
barrier()
finalize()
sww_file = base_dir + '/outputs/' + run_id + '.sww'
sww_file = sww_file.encode(
'utf-8',
'ignore') # sometimes run_id gets turned to a unicode object by celery
util.Make_Geotif(swwFile=sww_file,
output_quantities=['depth', 'velocity'],
myTimeStep='max',
CellSize=max_triangle_area,
lower_left=None,
upper_right=None,
EPSG_CODE=project_spatial_ref_epsg_code,
proj4string=None,
velocity_extrapolation=True,
min_allowed_height=1.0e-05,
output_dir=(base_dir + '/outputs/'),
bounding_polygon=boundary_data,
internal_holes=structures,
verbose=False,
k_nearest_neighbours=3,
creation_options=[])
logger.info("Done. Nice work.")
def run_chennai(sim_id):
project_root = os.path.abspath(os.path.dirname(__file__))
if not os.path.exists(project_root):
os.makedirs(project_root)
print "project_root = " + project_root
inputs_dir = '%s/inputs/' % project_root
if not os.path.exists(inputs_dir):
os.makedirs(inputs_dir)
print "inputs_dir = " + inputs_dir
working_dir = '%s/working/%s/' % (project_root, sim_id)
if not os.path.exists(working_dir):
os.makedirs(working_dir)
print "working_dir = " + working_dir
outputs_dir = '%s/outputs/%s' % (project_root, sim_id)
if not os.path.exists(outputs_dir):
os.makedirs(outputs_dir)
print "outputs_dir = " + outputs_dir
# get data
print "downloading data..."
urllib.urlretrieve(
'http://chennaifloodmanagement.org/uploaded/layers/utm44_1arc_v3.tif',
inputs_dir + 'utm44_1arc_v3.tif'
)
print os.listdir(inputs_dir)
# configure logging TODO: get this working!
log_location = project_root + '/' + sim_id + '.log'
open(log_location, 'a').close()
log.console_logging_level = log.INFO
log.log_logging_level = log.DEBUG
log.log_filename = log_location
print "# log.log_filename is: " + log.log_filename
print "# log_location is: " + log_location
log.debug('A message at DEBUG level')
log.info('Another message, INFO level')
print "# starting"
bounding_polygon_01 = [
[303382.14647903712, 1488780.8996663219],
[351451.89152459265, 1499834.3704521982],
[378957.03975921532, 1493150.8764886451],
[422656.80798244767, 1504204.3472745214],
[433196.16384805075, 1471300.9923770288],
[421885.63560203766, 1413463.0638462803],
[408261.59021479468, 1372590.9276845511],
[371245.31595511554, 1427344.16669366],
[316492.0769460068, 1417833.0406686035],
[303382.14647903712, 1488780.8996663219]
]
boundary_tags_01 = {
'inland': [0, 1, 2, 6, 7, 8],
'ocean': [3, 4, 5]
}
print "# Create domain:"
print "# mesh_filename = " + working_dir + 'mesh_01.msh'
domain = anuga.create_domain_from_regions(bounding_polygon=bounding_polygon_01,
boundary_tags=boundary_tags_01,
mesh_filename=working_dir + 'mesh_01.msh',
maximum_triangle_area=100000,
verbose=True)
domain.set_name(sim_id)
domain.set_datadir(outputs_dir)
poly_fun_pairs = [
[
'Extent',
inputs_dir + 'utm44_1arc_v3.tif'
]
]
print "# create topography_function"
print "input raster = " + inputs_dir + 'utm44_1arc_v3.tif'
topography_function = qs.composite_quantity_setting_function(
poly_fun_pairs,
domain,
nan_treatment='exception',
)
print topography_function
print "# set_quantity elevation"
domain.set_quantity('elevation', topography_function) # Use function for elevation
domain.set_quantity('friction', 0.03) # Constant friction
domain.set_quantity('stage', 1) # Constant initial stage
print "# all quantities set"
print "# Setup boundary conditions"
Br = anuga.Reflective_boundary(domain) # Solid reflective wall
Bt = anuga.Transmissive_boundary(domain) # Continue all values on boundary
Bd = anuga.Dirichlet_boundary([-20, 0., 0.]) # Constant boundary values
Bi = anuga.Dirichlet_boundary([10.0, 0, 0]) # Inflow
Bw = anuga.Time_boundary(
domain=domain, # Time dependent boundary
function=lambda t: [(10 * sin(t * 2 * pi) - 0.3) * exp(-t), 0.0, 0.0]
)
print "# Associate boundary tags with boundary objects"
domain.set_boundary({'inland': Br, 'ocean': Bd})
print domain.get_boundary_tags()
catchmentrainfall = Rainfall(
domain=domain,
rate=0.2
)
# # Note need path to File in String.
# # Else assumed in same directory
domain.forcing_terms.append(catchmentrainfall)
print "# Evolve system through time"
counter_timestep = 0
for t in domain.evolve(yieldstep=300, finaltime=6000):
counter_timestep += 1
print counter_timestep
print domain.timestepping_statistics()
asc_out_momentum = outputs_dir + '/' + sim_id + '_momentum.asc'
asc_out_depth = outputs_dir + '/' + sim_id + '_depth.asc'
anuga.sww2dem(outputs_dir + '/' + sim_id + '.sww',
asc_out_momentum,
quantity='momentum',
number_of_decimal_places=3,
cellsize=30,
reduction=max,
verbose=True)
anuga.sww2dem(outputs_dir + '/' + sim_id + '.sww',
asc_out_depth,
quantity='depth',
number_of_decimal_places=3,
cellsize=30,
reduction=max,
verbose=True)
outputs =[asc_out_depth, asc_out_momentum]
for output in outputs:
print "# Convert ASCII grid to GeoTiff so geonode can import it"
src_ds = gdal.Open(output)
dst_filename = (output[:-3] + 'tif')
print "# Create gtif instance"
driver = gdal.GetDriverByName("GTiff")
print "# Output to geotiff"
dst_ds = driver.CreateCopy(dst_filename, src_ds, 0)
print "# Properly close the datasets to flush the disk"
dst_filename = None
src_ds = None
print "Done. Nice work."
def test_composite_quantity_setting_function(self):
# Test the composite_quantity_setting_function
domain=self.create_domain(1.0, 0.0)
# Make a raster from the elevation data
from anuga.utilities import plot_utils as util
xs=domain.centroid_coordinates[:,0]+domain.geo_reference.xllcorner
ys=domain.centroid_coordinates[:,1]+domain.geo_reference.yllcorner
elev=domain.quantities['elevation'].centroid_values
allDat=numpy.vstack([xs,ys,elev]).transpose()
util.Make_Geotif(allDat, output_quantities=['ElevTest'], EPSG_CODE=32756,
output_dir='.', CellSize=1.,k_nearest_neighbours=1)
# Make a polygon-point pair which we use to set elevation in a 'channel'
trenchPoly = [[minX+40., minY], [minX+40., minY+100.],
[minX+60., minY+100.], [minX+60., minY]]
#################################################################
# This example uses a constant, and a raster, to set the quantity
F=qs.composite_quantity_setting_function(
[[trenchPoly, -1000.], ['Extent', 'PointData_ElevTest.tif']],
domain,
verbose=False)
# Points where we test the function
testPts_X=numpy.array([50., 3.])
testPts_Y=numpy.array([1., 20.])
fitted=F(testPts_X,testPts_Y)
# The fitted value in the trench should be -1000.
assert(fitted[0]==-1000.)
# Find the nearest domain point to the second test point
# This will have been used in constructing the elevation raster
nearest=((domain.centroid_coordinates[:,0]-3.)**2 +
(domain.centroid_coordinates[:,1]-20.)**2).argmin()
nearest_x=domain.centroid_coordinates[nearest,0]
assert(numpy.allclose(fitted[1],-nearest_x/150.))
#################################################################
# This example uses a constant, and a raster, to set the quantity, and
# applies the min/max bound
F=qs.composite_quantity_setting_function(
[[trenchPoly, -1000.], ['Extent', 'PointData_ElevTest.tif']],
domain,
clip_range = [[-500., 1.0e+100], [-1.0e+100, 1.0e+100]],
verbose=False)
# Points where we test the function
testPts_X=numpy.array([50., 3.])
testPts_Y=numpy.array([1., 20.])
fitted=F(testPts_X,testPts_Y)
# The fitted value in the trench should be -500, because of clipping
assert(fitted[0]==-500.)
# Find the nearest domain point to the second test point
# This will have been used in constructing the elevation raster
nearest = ((domain.centroid_coordinates[:,0]-3.)**2 +
(domain.centroid_coordinates[:,1]-20.)**2).argmin()
nearest_x = domain.centroid_coordinates[nearest,0]
assert(numpy.allclose(fitted[1],-nearest_x/150.))
#########################################################################
# This example uses a function, and a raster, to set the quantity
def f0(x,y):
return x/10.
F = qs.composite_quantity_setting_function(
[[trenchPoly, f0], ['Extent', 'PointData_ElevTest.tif']],
domain,
verbose=False)
fitted = F(testPts_X,testPts_Y)
# Now the fitted value in the trench should be determined by f0
assert(numpy.allclose(fitted[0],50./10.))
# The second test point should be as before
nearest = ((domain.centroid_coordinates[:,0]-3.)**2 +
(domain.centroid_coordinates[:,1]-20.)**2).argmin()
nearest_x = domain.centroid_coordinates[nearest,0]
assert(numpy.allclose(fitted[1],-nearest_x/150.))
##########################################################################
# This example uses 'All' as a polygon
F = qs.composite_quantity_setting_function(
[['All', f0 ], [None, 'PointData_ElevTest.tif']],
domain,
verbose=False)
fitted=F(testPts_X,testPts_Y)
# Now the fitted value in the trench should be determined by f0
assert(numpy.allclose(fitted[0],50./10.))
assert(numpy.allclose(fitted[1],3./10.))
###########################################################################
# This example should fail
def should_fail():
F=qs.composite_quantity_setting_function(
[['All', f0], ['All', 'PointData_ElevTest.tif']],
domain,
verbose=False)
# Need to call it to get the error
F(numpy.array([3.]), numpy.array([3.]))
return
self.assertRaises(Exception, lambda: should_fail())
###########################################################################
# This example should fail (since the clip_range minimum >= maximum)
def should_fail_1():
F=qs.composite_quantity_setting_function(
[[trenchPoly, f0], ['All', 'PointData_ElevTest.tif']],
domain,
clip_range = [[ -500., -1000.], [-1.0e+100, 1.0e+100]],
verbose=False)
return
self.assertRaises(Exception, lambda: should_fail_1())
###########################################################################
# This example features a function with some nan return values, and uses
# the nan_interpolation_region_polygon to try to fix it
def f0(x,y):
output = x/10.
output[0] = numpy.nan
return output
F = qs.composite_quantity_setting_function(
[[trenchPoly, f0], ['Extent', 'PointData_ElevTest.tif']],
domain,
nan_treatment = 'fall_through',
nan_interpolation_region_polygon = [trenchPoly],
default_k_nearest_neighbours = 3,
default_raster_interpolation = 'bilinear',
verbose=False)
# Points where we test the function. We deliberately use many points with x=50,
# which happens to ensure that the nan value is replaced with the same
# value it would have had anyway
testPts_X = numpy.array([50.,50.00, 50., 50., 97., 51., 3.])
testPts_Y = numpy.array([1., 2., 3. , 4 , 20., 50., 60.])
fitted = F(testPts_X,testPts_Y)
# We should have no nan values
assert(sum(fitted!=fitted) == 0)
# Now the fitted value in the trench should be determined by f0 because
# the re-interpolation of nan values was designed to ensure it
assert(numpy.allclose(fitted[0],50./10.))
###########################################################################
# This example features a function with some nan return values, and uses
# the nan_interpolation_region_polygon to try to fix it
# Make a polygon-point pair which we use to set elevation in a 'channel'
innerTrenchPoly = [[minX+45., minY+45.], [minX+45., minY+55.],
[minX+55., minY+55.], [minX+55., minY+45.]]
def f_nan(x,y):
output = x*0 + numpy.nan
return(output)
F = qs.composite_quantity_setting_function(
[[innerTrenchPoly, f_nan], [trenchPoly, f0], ['Extent', 'PointData_ElevTest.tif']],
domain,
nan_treatment = 'fall_through',
nan_interpolation_region_polygon = [trenchPoly],
default_k_nearest_neighbours = 3,
default_raster_interpolation = 'bilinear',
verbose=False)
# Points where we test the function. We deliberately use many points with x=50,
# which happens to ensure that the nan value is replaced with the same
# value it would have had anyway
testPts_X = numpy.array([50.,50.00, 50., 50., 97., 51., 3.])
testPts_Y = numpy.array([1., 2., 3. , 4 , 20., 50., 60.])
fitted = F(testPts_X,testPts_Y)
# We should have no nan values
assert(sum(fitted!=fitted) == 0)
# Now the fitted value in the trench should be determined by f0 because
# the re-interpolation of nan values was designed to ensure it
assert(numpy.allclose(fitted[0],50./10.))
return
