def ImplicitFunctionVtuCut(inputVtu, implicitFunction):
"""
Perform a cut of a vtu. Cutting as in ClipCow.py vtkCutter example of vtk
documentation 5.0.4, and Fluidity test case lock_exchange_tet.xml results
variable.
"""
# The cutter
cutter = vtk.vtkCutter()
cutter.SetCutFunction(implicitFunction)
if vtk.vtkVersion.GetVTKMajorVersion() <= 5:
cutter.SetInput(inputVtu.ugrid)
else:
cutter.SetInputData(inputVtu.ugrid)
# Cut
cutter.Update()
cutUPoly = cutter.GetOutput()
# Construct output
result = vtu()
result.ugrid = PolyDataToUnstructuredGrid(cutUPoly)
if result.ugrid.GetNumberOfPoints() == 0:
debug.deprint("Warning: Cut vtu contains no nodes")
return result
def ImplicitFunctionVtuCut(inputVtu, implicitFunction):
"""
Perform a cut of a vtu. Cutting as in ClipCow.py vtkCutter example of vtk
documentation 5.0.4, and Fluidity test case lock_exchange_tet.xml results
variable.
"""
# The cutter
cutter = vtk.vtkCutter()
cutter.SetCutFunction(implicitFunction)
if vtk.vtkVersion.GetVTKMajorVersion() <= 5:
cutter.SetInput(inputVtu.ugrid)
else:
cutter.SetInputData(inputVtu.ugrid)
# Cut
cutter.Update()
cutUPoly = cutter.GetOutput()
# Construct output
result = vtu()
result.ugrid = PolyDataToUnstructuredGrid(cutUPoly)
if result.ugrid.GetNumberOfPoints() == 0:
debug.deprint("Warning: Cut vtu contains no nodes")
return result
def ReadMsh(filename):
"""
Read a Gmsh msh file
"""
fileHandle = open(filename, "rb")
basename = filename.split(".")[0]
hasHalo = filehandling.FileExists(basename + ".halo")
# Read the MeshFormat section
line = ReadNonCommentLine(fileHandle)
assert (line == "$MeshFormat")
line = ReadNonCommentLine(fileHandle)
lineSplit = line.split()
assert (len(lineSplit) == 3)
version = lineSplit[0]
fileType = int(lineSplit[1])
dataSize = int(lineSplit[2])
if version[0] == "4" and version < "4.1":
raise Exception("gmshtools doesn't handle msh4 with minor version 0")
if fileType == 1:
# Binary format
if version[0] == "4":
mesh = ReadBinaryMshV4(fileHandle, dataSize)
elif version[0] == "2":
mesh = ReadBinaryMshV2(fileHandle, dataSize)
else:
raise Exception("Unknown gmsh major version")
elif fileType == 0:
# ASCII format
if version[0] == "4":
mesh = ReadAsciiMshV4(fileHandle)
elif version[0] == "2":
mesh = ReadAsciiMshV2(fileHandle)
else:
raise Exception("Unknown gmsh major version")
else:
raise Exception("File type " + str(fileType) + " not recognised")
fileHandle.close()
if hasHalo:
# Read the .halo file
debug.dprint("Reading .halo file")
if mesh_halos.HaloIOSupport():
halos = mesh_halos.ReadHalos(basename + ".halo")
mesh.SetHalos(halos)
else:
debug.deprint("Warning: No .halo I/O support")
return mesh
def _SetElementTypeIdFromData(self, dim, nodeCount):
if (dim, nodeCount) in self._elementTypeIdsMap:
self._elementTypeId = self._elementTypeIdsMap[(dim, nodeCount)]
else:
debug.deprint("Warning: Unknown element type with " + str(nodeCount) + " nodes in " + str(dim) + " dimensions")
self._elementTypeId = ELEMENT_UNKNOWN
self._RaiseEvent("elementTypeIdChange")
return
def _SetElementTypeIdFromData(self, dim, nodeCount):
if (dim, nodeCount) in self._elementTypeIdsMap:
self._elementTypeId = self._elementTypeIdsMap[(dim, nodeCount)]
else:
debug.deprint("Warning: Unknown element type with " + str(nodeCount) + " nodes in " + str(dim) + " dimensions")
self._elementTypeId = ELEMENT_UNKNOWN
self._RaiseEvent("elementTypeIdChange")
return
def AddtoVtu(vtu, add, scale=None):
"""
Add a vtu onto an input vtu
"""
if VtuMatchLocations(vtu, add):
for fieldName in vtu.GetFieldNames():
AddtoVtuField(vtu, add, fieldName, scale=scale)
else:
# This could get expensive
debug.deprint("Warning: vtu locations do not match - remapping")
remappedAddVtu = RemappedVtu(add, vtu)
for fieldName in vtu.GetFieldNames():
AddtoVtuField(vtu, remappedAddVtu, fieldName, scale=scale)
return
def AddtoVtu(vtu, add, scale = None):
"""
Add a vtu onto an input vtu
"""
if VtuMatchLocations(vtu, add):
for fieldName in vtu.GetFieldNames():
AddtoVtuField(vtu, add, fieldName, scale = scale)
else:
# This could get expensive
debug.deprint("Warning: vtu locations do not match - remapping")
remappedAddVtu = RemappedVtu(add, vtu)
for fieldName in vtu.GetFieldNames():
AddtoVtuField(vtu, remappedAddVtu, fieldName, scale = scale)
return
def InterpolatedValue(self, name, latitude, longitude, time):
"""
Tri-linearly interpolate the supplied field at the supplied latitude,
longitude and time
"""
data = self._file.variables[name]
if latitude > self._latitudes[0] or latitude < self._latitudes[-1]:
debug.deprint("latitude = " + str(latitude))
debug.deprint("Valid latitude range = " +
str((self._latitudes[-1], self._latitudes[0])))
raise Exception("Invalid latitude")
while longitude < 0.0:
longitude += 360.0
while longitude > 360.0:
longitude -= 360.0
if time < self._times[0] or time > self._times[-1]:
debug.deprint("time = " + str(time))
debug.deprint("Valid time range = " +
str((self._times[0], self._times[-1])))
raise Exception("Invalid time")
left = structured_fields.IndexBinarySearch(longitude, self._longitudes)
right = left + 1
assert (not right == left)
longRatio = (longitude - self._longitudes[left]) / (
self._longitudes[right] - self._longitudes[left])
left %= len(self._longitudes) - 1
right %= len(self._longitudes) - 1
upper = structured_fields.IndexBinaryDecSearch(latitude,
self._latitudes)
lower = min(upper + 1, len(self._latitudes) - 1)
if upper == lower:
latRatio = 1.0
else:
latRatio = (latitude - self._latitudes[lower]) / (
self._latitudes[upper] - self._latitudes[lower])
before = structured_fields.IndexBinarySearch(time, self._times)
after = min(before + 1, len(self._times) - 1)
if after == before:
timeRatio = 1.0
else:
timeRatio = (time - self._times[before]) / (self._times[after] -
self._times[before])
timeVals = [None, None]
for i, timeIndex in enumerate([before, after]):
timeVals[i] = calc.BilinearlyInterpolate(self.Value(name, timeIndex, upper, left), self.Value(name, timeIndex, upper, right), \
self.Value(name, timeIndex, lower, left), self.Value(name, timeIndex, lower, right), \
longRatio, latRatio)
return calc.LinearlyInterpolate(timeVals[0], timeVals[1], timeRatio)
def VtuToMesh(vtu, idsName="IDs"):
"""
Construct a mesh from the supplied vtu
"""
dim = vtktools.VtuDim(vtu)
boundingBox = vtktools.VtuBoundingBox(vtu)
dimIndices = boundingBox.UsedDimIndices()
mesh = Mesh(dim)
# Read the points
for location in vtu.GetLocations():
location = numpy.array(location)
mesh.AddNodeCoord(location[dimIndices])
# Read the boundary / region IDs
cellData = vtu.ugrid.GetCellData().GetArray(idsName)
# Read the elements
for i in range(vtu.ugrid.GetNumberOfCells()):
cell = vtu.ugrid.GetCell(i)
nodeIds = cell.GetPointIds()
if cellData is None:
id = None
else:
id = cellData.GetTuple1(i)
type = vtktools.VtkType(vtkTypeId=cell.GetCellType())
element = elements.Element(
nodes=[nodeIds.GetId(i) for i in range(nodeIds.GetNumberOfIds())],
ids=id)
if type.GetDim() == dim - 1:
mesh.AddSurfaceElement(element)
elif type.GetDim() == dim:
mesh.AddVolumeElement(element)
else:
debug.deprint(
"Warning: Found element in vtu that is neither a surface nor volume element"
)
return mesh
def ParseRawS(s, delimiter):
newS = {}
for key1 in s.keys():
assert (not key1 in ["val", "value"])
if isinstance(s[key1], dict):
if len(s[key1].keys()) == 1 and s[key1].keys()[0] in [
"val", "value"
]:
newS[str(key1)] = s[key1][s[key1].keys()[0]]
else:
subS = ParseRawS(s[key1], delimiter)
newS[str(key1)] = {}
for key2 in subS.keys():
newS[str(key1)][str(key2)] = subS[key2]
else:
rank = len(s[key1].shape)
if rank > 1:
assert (rank == 2)
if includeMc:
# Add in this vector
# stat_parser gives this in an inconvenient matrix order. Take the
# transpose here to make life easier.
newS[str(key1)] = s[key1].transpose()
# Add in the vector field components
for i in range(len(s[key1])):
newS[str(key1) + delimiter +
str(i + 1)] = s[key1][i]
else:
try:
# Add in this scalar
newS[str(key1)] = s[key1]
except TypeError:
debug.deprint(
"Type error for data " + str(s[key1]), 0)
raise Exception("ParseRawS failure")
except ValueError:
debug.deprint(
"Value error for data " + str(s[key1]), 0)
raise Exception("ParseRawS failure")
return newS
def _initialise_math(self):
"""
Detect math routines
"""
if NumpySupport():
# Use numpy if we can, as the math calls are performance critical
self._cos = numpy.cos
self._sin = numpy.sin
self._atan = numpy.arctan
self._atan2 = numpy.arctan2
else:
# Otherwise, fall back to math
debug.deprint("Warning: Unable to use numpy module in Lomb-Scargle periodogram")
self._cos = math.cos
self._sin = math.sin
self._atan = math.atan
self._atan2 = math.atan2
return
def InterpolatedValue(self, name, latitude, longitude, time):
"""
Tri-linearly interpolate the supplied field at the supplied latitude,
longitude and time
"""
data = self._file.variables[name]
if latitude > self._latitudes[0] or latitude < self._latitudes[-1]:
debug.deprint("latitude = " + str(latitude))
debug.deprint("Valid latitude range = " + str((self._latitudes[-1], self._latitudes[0])))
raise Exception("Invalid latitude")
while longitude < 0.0:
longitude += 360.0
while longitude > 360.0:
longitude -= 360.0
if time < self._times[0] or time > self._times[-1]:
debug.deprint("time = " + str(time))
debug.deprint("Valid time range = " + str((self._times[0], self._times[-1])))
raise Exception("Invalid time")
left = structured_fields.IndexBinarySearch(longitude, self._longitudes)
right = left + 1
assert(not right == left)
longRatio = (longitude - self._longitudes[left]) / (self._longitudes[right] - self._longitudes[left])
left %= len(self._longitudes) - 1
right %= len(self._longitudes) - 1
upper = structured_fields.IndexBinaryDecSearch(latitude, self._latitudes)
lower = min(upper + 1, len(self._latitudes) - 1)
if upper == lower:
latRatio = 1.0
else:
latRatio = (latitude - self._latitudes[lower]) / (self._latitudes[upper] - self._latitudes[lower])
before = structured_fields.IndexBinarySearch(time, self._times)
after = min(before + 1, len(self._times) - 1)
if after == before:
timeRatio = 1.0
else:
timeRatio = (time - self._times[before]) / (self._times[after] - self._times[before])
timeVals = [None, None]
for i, timeIndex in enumerate([before, after]):
timeVals[i] = calc.BilinearlyInterpolate(self.Value(name, timeIndex, upper, left), self.Value(name, timeIndex, upper, right), \
self.Value(name, timeIndex, lower, left), self.Value(name, timeIndex, lower, right), \
longRatio, latRatio)
return calc.LinearlyInterpolate(timeVals[0], timeVals[1], timeRatio)
def VtuToMesh(vtu, idsName = "IDs"):
"""
Construct a mesh from the supplied vtu
"""
dim = vtktools.VtuDim(vtu)
boundingBox = vtktools.VtuBoundingBox(vtu)
dimIndices = boundingBox.UsedDimIndices()
mesh = Mesh(dim)
# Read the points
for location in vtu.GetLocations():
location = numpy.array(location)
mesh.AddNodeCoord(location[dimIndices])
# Read the boundary / region IDs
cellData = vtu.ugrid.GetCellData().GetArray(idsName)
# Read the elements
for i in range(vtu.ugrid.GetNumberOfCells()):
cell = vtu.ugrid.GetCell(i)
nodeIds = cell.GetPointIds()
if cellData is None:
id = None
else:
id = cellData.GetTuple1(i)
type = vtktools.VtkType(vtkTypeId = cell.GetCellType())
element = elements.Element(nodes = vtktools.FromVtkNodeOrder([nodeIds.GetId(i) for i in range(nodeIds.GetNumberOfIds())], type), ids = id)
if type.GetDim() == dim - 1:
mesh.AddSurfaceElement(element)
elif type.GetDim() == dim:
mesh.AddVolumeElement(element)
else:
debug.deprint("Warning: Found element in vtu that is neither a surface nor volume element")
return mesh
def _initialise_math(self):
"""
Detect math routines
"""
if NumpySupport():
# Use numpy if we can, as the math calls are performance critical
self._cos = numpy.cos
self._sin = numpy.sin
self._atan = numpy.arctan
self._atan2 = numpy.arctan2
else:
# Otherwise, fall back to math
debug.deprint(
"Warning: Unable to use numpy module in Lomb-Scargle periodogram"
)
self._cos = math.cos
self._sin = math.sin
self._atan = math.atan
self._atan2 = math.atan2
return
def ParseRawS(s, delimiter):
newS = {}
for key1 in s.keys():
assert(not key1 in ["val", "value"])
if isinstance(s[key1], dict):
if len(s[key1].keys()) == 1 and s[key1].keys()[0] in ["val", "value"]:
newS[str(key1)] = s[key1][s[key1].keys()[0]]
else:
subS = ParseRawS(s[key1], delimiter)
newS[str(key1)] = {}
for key2 in subS.keys():
newS[str(key1)][str(key2)] = subS[key2]
else:
rank = len(s[key1].shape)
if rank > 1:
assert(rank == 2)
if includeMc:
# Add in this vector
# stat_parser gives this in an inconvenient matrix order. Take the
# transpose here to make life easier.
newS[str(key1)] = s[key1].transpose()
# Add in the vector field components
for i in range(len(s[key1])):
newS[str(key1) + delimiter + str(i + 1)] = s[key1][i]
else:
try:
# Add in this scalar
newS[str(key1)] = s[key1]
except TypeError:
debug.deprint("Type error for data " + str(s[key1]), 0)
raise Exception("ParseRawS failure")
except ValueError:
debug.deprint("Value error for data " + str(s[key1]), 0)
raise Exception("ParseRawS failure")
return newS
def ModelPvtuToVtu(pvtu):
"""
Convert a parallel vtu to a serial vtu but without any fields. Does nothing
(except generate a copy) if the supplied vtu is already a serial vtu.
"""
# Step 1: Extract the ghost levels, and check that we have a parallel vtu
result = vtu()
ghostLevel = pvtu.ugrid.GetCellData().GetArray("vtkGhostLevels")
if ghostLevel is None:
# We have a serial vtu
debug.deprint("Warning: input file contains no vtkGhostLevels")
ghostLevel = [0 for i in range(pvtu.ugrid.GetNumberOfCells())]
else:
# We have a parallel vtu
ghostLevel = [
ghostLevel.GetValue(i)
for i in range(ghostLevel.GetNumberOfComponents() *
ghostLevel.GetNumberOfTuples())
]
# Step 2: Collect the non-ghost cell IDs
debug.dprint("Input cells: " + str(pvtu.ugrid.GetNumberOfCells()))
cellIds = []
keepCell = [False for i in range(pvtu.ugrid.GetNumberOfCells())]
oldCellIdToNew = [None for i in range(pvtu.ugrid.GetNumberOfCells())]
# Collect the new non-ghost cell IDs and generate the cell renumbering map
index = 0
for i, level in enumerate(ghostLevel):
if calc.AlmostEquals(level, 0.0):
cellIds.append(i)
keepCell[i] = True
oldCellIdToNew[i] = index
index += 1
debug.dprint("Non-ghost cells: " + str(len(cellIds)))
# Step 3: Collect the non-ghost node IDs
debug.dprint("Input points: " + str(pvtu.ugrid.GetNumberOfPoints()))
keepNode = [False for i in range(pvtu.ugrid.GetNumberOfPoints())]
# Find a list of candidate non-ghost node IDs, based on nodes attached to
# non-ghost cells
keepNodeCount = 0
for cellId in cellIds:
cellNodeIds = pvtu.ugrid.GetCell(cellId).GetPointIds()
cellNodeIds = [
cellNodeIds.GetId(i) for i in range(cellNodeIds.GetNumberOfIds())
]
keepNodeCount += len(cellNodeIds)
for nodeId in cellNodeIds:
keepNode[nodeId] = True
uniqueKeepNodeCount = keepNode.count(True)
debug.dprint("Non-ghost nodes (pass 1): " + str(uniqueKeepNodeCount))
if uniqueKeepNodeCount == keepNodeCount:
debug.dprint("Assuming pvtu is discontinuous")
# we're keeping all non-ghost nodes:
nodeIds = [
i for i in range(pvtu.ugrid.GetNumberOfPoints()) if keepNode[i]
]
oldNodeIdToNew = numpy.array([None] * pvtu.ugrid.GetNumberOfPoints())
oldNodeIdToNew[nodeIds] = range(keepNodeCount)
else:
# for the CG case we still have duplicate nodes that need to be removed
oldNodeIdToNew, nodeIds = PvtuToVtuRemoveDuplicateNodes(pvtu, keepNode)
# Step 4: Generate the new locations
locations = pvtu.GetLocations()
locations = numpy.array([locations[i] for i in nodeIds])
points = vtk.vtkPoints()
points.SetDataTypeToDouble()
for location in locations:
points.InsertNextPoint(location)
result.ugrid.SetPoints(points)
# Step 5: Generate the new cells
for cellId in cellIds:
cell = pvtu.ugrid.GetCell(cellId)
cellNodeIds = cell.GetPointIds()
cellNodeIds = [
cellNodeIds.GetId(i) for i in range(cellNodeIds.GetNumberOfIds())
]
idList = vtk.vtkIdList()
for nodeId in cellNodeIds:
oldNodeId = nodeId
nodeId = oldNodeIdToNew[nodeId]
assert (not nodeId is None)
assert (nodeId >= 0)
assert (nodeId <= len(nodeIds))
idList.InsertNextId(nodeId)
result.ugrid.InsertNextCell(cell.GetCellType(), idList)
return result, oldNodeIdToNew, oldCellIdToNew
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""
VTK tools
"""
import copy
import math
import sys
import unittest
import fluidity.diagnostics.debug as debug
try:
import vtk
except ImportError:
debug.deprint("Warning: Failed to import vtk module")
try:
from vtktools import *
except ImportError:
debug.deprint("Warning: Failed to import vtktools module")
import fluidity.diagnostics.bounds as bounds
import fluidity.diagnostics.calc as calc
import fluidity.diagnostics.elements as elements
import fluidity.diagnostics.optimise as optimise
import fluidity.diagnostics.simplices as simplices
import fluidity.diagnostics.utils as utils
def VtkSupport():
def ModelPvtuToVtu(pvtu):
"""
Convert a parallel vtu to a serial vtu but without any fields. Does nothing
(except generate a copy) if the supplied vtu is already a serial vtu.
"""
# Step 1: Extract the ghost levels, and check that we have a parallel vtu
result = vtu()
ghostLevel = pvtu.ugrid.GetCellData().GetArray("vtkGhostLevels")
if ghostLevel is None:
# We have a serial vtu
debug.deprint("Warning: VtuFromPvtu passed a serial vtu")
ghostLevel = [0 for i in range(vtu.ugrid.GetNumberOfCells())]
else:
# We have a parallel vtu
ghostLevel = [
ghostLevel.GetValue(i)
for i in range(ghostLevel.GetNumberOfComponents() *
ghostLevel.GetNumberOfTuples())
]
# Step 2: Collect the non-ghost cell IDs
debug.dprint("Input cells: " + str(pvtu.ugrid.GetNumberOfCells()))
cellIds = []
keepCell = [False for i in range(pvtu.ugrid.GetNumberOfCells())]
oldCellIdToNew = [None for i in range(pvtu.ugrid.GetNumberOfCells())]
# Collect the new non-ghost cell IDs and generate the cell renumbering map
index = 0
for i, level in enumerate(ghostLevel):
if calc.AlmostEquals(level, 0.0):
cellIds.append(i)
keepCell[i] = True
oldCellIdToNew[i] = index
index += 1
debug.dprint("Non-ghost cells: " + str(len(cellIds)))
# Step 3: Collect the non-ghost node IDs
debug.dprint("Input points: " + str(pvtu.ugrid.GetNumberOfPoints()))
nodeIds = []
keepNode = [False for i in range(pvtu.ugrid.GetNumberOfPoints())]
oldNodeIdToNew = [None for i in range(pvtu.ugrid.GetNumberOfPoints())]
# Find a list of candidate non-ghost node IDs, based on nodes attached to
# non-ghost cells
for cellId in cellIds:
cellNodeIds = pvtu.ugrid.GetCell(cellId).GetPointIds()
cellNodeIds = [
cellNodeIds.GetId(i) for i in range(cellNodeIds.GetNumberOfIds())
]
for nodeId in cellNodeIds:
keepNode[nodeId] = True
debug.dprint("Non-ghost nodes (pass 1): " + str(keepNode.count(True)))
# Detect duplicate nodes
# Jumping through Python 2.3 hoops for cx1 - in >= 2.4, can just pass a cmp
# argument to list.sort
class LocationSorter(utils.Sorter):
def __init__(self, x, y, order=[0, 1, 2]):
utils.Sorter.__init__(self, x, y)
self._order = order
return
def __cmp__(self, val):
def cmp(x, y, order):
for comp in order:
if x[comp] > y[comp]:
return 1
elif x[comp] < y[comp]:
return -1
return 0
return cmp(self._key, val.GetKey(), self._order)
def Dup(x, y, tol):
for i, xVal in enumerate(x):
if abs(xVal - y[i]) > tol:
return False
return True
locations = pvtu.GetLocations()
lbound, ubound = VtuBoundingBox(pvtu).GetBounds()
tol = calc.L2Norm([ubound[i] - lbound[i]
for i in range(len(lbound))]) / 1.0e12
debug.dprint("Duplicate node tolerance: " + str(tol))
duplicateNodeMap = [None for i in range(pvtu.ugrid.GetNumberOfPoints())]
duplicateNodeMapInverse = [[] for i in range(len(duplicateNodeMap))]
# We need to sort the locations using all possible combinations of component
# order, to take account of all possible floating point errors.
orders = [[0], [[0, 1], [1, 0]],
[[0, 1, 2], [0, 2, 1], [1, 0, 2], [1, 2, 0], [2, 0, 1],
[2, 1, 0]]][VtuDim(pvtu) - 1]
for order in orders:
debug.dprint("Processing component order: " + str(order))
# Generate a sorted list of locations, with their node IDs
sortPack = [
LocationSorter(location.tolist(), i, order)
for i, location in enumerate(locations)
]
sortPack.sort()
permutedLocations = [pack.GetKey() for pack in sortPack]
permutedNodeIds = [pack.GetValue() for pack in sortPack]
# This rather horrible construction maps all except the first node in each set
# of duplicate nodes to the first node in the set of duplicate nodes, for the
# sorted current non-ghost locations
i = 0
while i < len(permutedLocations) - 1:
j = i
while j < len(permutedLocations) - 1:
if Dup(permutedLocations[i], permutedLocations[j + 1], tol):
if keepNode[permutedNodeIds[j + 1]]:
oldNodeId = permutedNodeIds[j + 1]
newNodeId = permutedNodeIds[i]
while not duplicateNodeMap[newNodeId] is None:
newNodeId = duplicateNodeMap[newNodeId]
if newNodeId == oldNodeId:
# This is already mapped the other way
break
if newNodeId == oldNodeId:
# Can only occur from early exit of the above loop
j += 1
continue
def MapInverses(oldNodeId, newNodeId):
for nodeId in duplicateNodeMapInverse[oldNodeId]:
assert (not nodeId == newNodeId)
assert (keepNode[newNodeId])
keepNode[nodeId] = False
duplicateNodeMap[nodeId] = newNodeId
duplicateNodeMapInverse[newNodeId].append(
nodeId)
MapInverses(nodeId, newNodeId)
duplicateNodeMapInverse[oldNodeId] = []
return
keepNode[newNodeId] = True
keepNode[oldNodeId] = False
# Map everything mapped to the old node ID to the new node ID
MapInverses(oldNodeId, newNodeId)
duplicateNodeMap[oldNodeId] = newNodeId
duplicateNodeMapInverse[newNodeId].append(oldNodeId)
j += 1
else:
break
i = j
i += 1
debug.dprint("Non-ghost nodes: " + str(keepNode.count(True)))
# Collect the final non-ghost node IDs and generate the node renumbering map
nodeIds = []
index = 0
for i, keep in enumerate(keepNode):
if keep:
nodeIds.append(i)
oldNodeIdToNew[i] = index
index += 1
for i, nodeId in enumerate(duplicateNodeMap):
if not nodeId is None:
assert (oldNodeIdToNew[i] is None)
assert (not oldNodeIdToNew[nodeId] is None)
oldNodeIdToNew[i] = oldNodeIdToNew[nodeId]
debug.dprint("Non-ghost nodes (pass 2): " + str(len(nodeIds)))
# Step 4: Generate the new locations
locations = pvtu.GetLocations()
locations = numpy.array([locations[i] for i in nodeIds])
points = vtk.vtkPoints()
points.SetDataTypeToDouble()
for location in locations:
points.InsertNextPoint(location)
result.ugrid.SetPoints(points)
# Step 5: Generate the new cells
for cellId in cellIds:
cell = pvtu.ugrid.GetCell(cellId)
cellNodeIds = cell.GetPointIds()
cellNodeIds = [
cellNodeIds.GetId(i) for i in range(cellNodeIds.GetNumberOfIds())
]
idList = vtk.vtkIdList()
for nodeId in cellNodeIds:
oldNodeId = nodeId
nodeId = oldNodeIdToNew[nodeId]
assert (not nodeId is None)
assert (nodeId >= 0)
assert (nodeId <= len(nodeIds))
idList.InsertNextId(nodeId)
result.ugrid.InsertNextCell(cell.GetCellType(), idList)
return result, oldNodeIdToNew, oldCellIdToNew
"""
Some mathematical routines
"""
from __future__ import print_function
import copy
import math
import unittest
import fluidity.diagnostics.debug as debug
try:
import numpy
except ImportError:
debug.deprint("Warning: Failed to import numpy module")
try:
import scipy.linalg
except ImportError:
debug.deprint("Warning: Failed to import scipy.linalg module")
try:
import scipy.stats
except ImportError:
debug.deprint("Warning: Failed to import scipy.stats module")
try:
import vtk
except ImportError:
debug.deprint("Warning: Failed to import vtk module")
import fluidity.diagnostics.optimise as optimise
import fluidity.diagnostics.utils as utils
def ReadAsciiMshV4(fileHandle):
line = ReadNonCommentLine(fileHandle)
assert (line == "$EndMeshFormat")
# skip to the Nodes section
while line != "$Nodes":
line = ReadNonCommentLine(fileHandle)
assert (line == "$Nodes")
line = ReadNonCommentLine(fileHandle)
lineSplit = line.split()
numBlocks = int(lineSplit[0])
numNodes = int(lineSplit[1])
seenNode = [False] * numNodes
nodeIds = []
nodes = []
lbound = [calc.Inf() for i in range(3)]
ubound = [-calc.Inf() for i in range(3)]
for b in range(numBlocks):
line = ReadNonCommentLine(fileHandle)
lineSplit = line.split()
subNodes = int(lineSplit[3])
tagArr = [int(ReadNonCommentLine(fileHandle)) for i in range(subNodes)]
for i in range(subNodes):
line = ReadNonCommentLine(fileHandle)
lineSplit = line.split()
assert (len(lineSplit) == 3)
nodeId = tagArr[i]
coord = [float(comp) for comp in lineSplit]
assert (nodeId > 0)
assert (not seenNode[nodeId - 1])
seenNode[nodeId - 1] = True
nodeIds.append(nodeId)
nodes.append(coord)
for j in range(3):
lbound[j] = min(lbound[j], coord[j])
ubound[j] = max(ubound[j], coord[j])
line = ReadNonCommentLine(fileHandle)
assert (line == "$EndNodes")
nodes = utils.KeyedSort(nodeIds, nodes)
bound = bounds.BoundingBox(lbound, ubound)
indices = bound.UsedDimIndices()
dim = len(indices)
if dim < 3:
nodes = [[coord[index] for index in indices] for coord in nodes]
mesh = meshes.Mesh(dim)
mesh.AddNodeCoords(nodes)
# read the Elements section
line = ReadNonCommentLine(fileHandle)
assert (line == "$Elements")
line = ReadNonCommentLine(fileHandle)
lineSplit = line.split()
numEntities = int(lineSplit[0])
numElems = int(lineSplit[1])
for i in range(numEntities):
line = ReadNonCommentLine(fileHandle)
lineSplit = line.split()
entityDim = int(lineSplit[0])
entityTag = int(lineSplit[1])
elementType = int(lineSplit[2])
elemsInBlock = int(lineSplit[3])
type = GmshElementType(gmshElementTypeId=elementType)
for j in range(elemsInBlock):
line = ReadNonCommentLine(fileHandle)
lineSplit = line.split()
assert (len(lineSplit) == 1 + type.GetNodeCount())
ids = [entityTag, int(lineSplit[0])]
nodes = FromGmshNodeOrder(
[int(node) - 1 for node in lineSplit[1:]], type)
element = elements.Element(nodes, ids)
if type.GetDim() == dim - 1:
mesh.AddSurfaceElement(element)
elif type.GetDim() == dim:
mesh.AddVolumeElement(element)
else:
debug.deprint("Warning: Element of type " + str(type) +
" encountered in " + str(dim) + " dimensions")
line = ReadNonCommentLine(fileHandle)
assert (line == "$EndElements")
return mesh
def ModelPvtuToVtu(pvtu):
"""
Convert a parallel vtu to a serial vtu but without any fields. Does nothing
(except generate a copy) if the supplied vtu is already a serial vtu.
"""
# Step 1: Extract the ghost levels, and check that we have a parallel vtu
result = vtu()
ghostLevel = pvtu.ugrid.GetCellData().GetArray("vtkGhostLevels")
if ghostLevel is None:
# We have a serial vtu
debug.deprint("Warning: input file contains no vtkGhostLevels")
ghostLevel = [0 for i in range(pvtu.ugrid.GetNumberOfCells())]
else:
# We have a parallel vtu
ghostLevel = [ghostLevel.GetValue(i) for i in range(ghostLevel.GetNumberOfComponents() * ghostLevel.GetNumberOfTuples())]
# Step 2: Collect the non-ghost cell IDs
debug.dprint("Input cells: " + str(pvtu.ugrid.GetNumberOfCells()))
cellIds = []
keepCell = [False for i in range(pvtu.ugrid.GetNumberOfCells())]
oldCellIdToNew = [None for i in range(pvtu.ugrid.GetNumberOfCells())]
# Collect the new non-ghost cell IDs and generate the cell renumbering map
index = 0
for i, level in enumerate(ghostLevel):
if calc.AlmostEquals(level, 0.0):
cellIds.append(i)
keepCell[i] = True
oldCellIdToNew[i] = index
index += 1
debug.dprint("Non-ghost cells: " + str(len(cellIds)))
# Step 3: Collect the non-ghost node IDs
debug.dprint("Input points: " + str(pvtu.ugrid.GetNumberOfPoints()))
keepNode = [False for i in range(pvtu.ugrid.GetNumberOfPoints())]
# Find a list of candidate non-ghost node IDs, based on nodes attached to
# non-ghost cells
keepNodeCount = 0
for cellId in cellIds:
cellNodeIds = pvtu.ugrid.GetCell(cellId).GetPointIds()
cellNodeIds = [cellNodeIds.GetId(i) for i in range(cellNodeIds.GetNumberOfIds())]
keepNodeCount += len(cellNodeIds)
for nodeId in cellNodeIds:
keepNode[nodeId] = True
uniqueKeepNodeCount = keepNode.count(True)
debug.dprint("Non-ghost nodes (pass 1): " + str(uniqueKeepNodeCount))
if uniqueKeepNodeCount==keepNodeCount:
debug.dprint("Assuming pvtu is discontinuous")
# we're keeping all non-ghost nodes:
nodeIds = [i for i in range(pvtu.ugrid.GetNumberOfPoints()) if keepNode[i]]
oldNodeIdToNew = numpy.array([None]*pvtu.ugrid.GetNumberOfPoints())
oldNodeIdToNew[nodeIds] = range(keepNodeCount)
else:
# for the CG case we still have duplicate nodes that need to be removed
oldNodeIdToNew, nodeIds = PvtuToVtuRemoveDuplicateNodes(pvtu, keepNode)
# Step 4: Generate the new locations
locations = pvtu.GetLocations()
locations = numpy.array([locations[i] for i in nodeIds])
points = vtk.vtkPoints()
points.SetDataTypeToDouble()
for location in locations:
points.InsertNextPoint(location)
result.ugrid.SetPoints(points)
# Step 5: Generate the new cells
for cellId in cellIds:
cell = pvtu.ugrid.GetCell(cellId)
cellNodeIds = cell.GetPointIds()
cellNodeIds = [cellNodeIds.GetId(i) for i in range(cellNodeIds.GetNumberOfIds())]
idList = vtk.vtkIdList()
for nodeId in cellNodeIds:
oldNodeId = nodeId
nodeId = oldNodeIdToNew[nodeId]
assert(not nodeId is None)
assert(nodeId >= 0)
assert(nodeId <= len(nodeIds))
idList.InsertNextId(nodeId)
result.ugrid.InsertNextCell(cell.GetCellType(), idList)
return result, oldNodeIdToNew, oldCellIdToNew
"""
import datetime
import math
import os
import unittest
import fluidity.diagnostics.debug as debug
from scipy.version import version as SciPyVersion
if tuple(int(x) for x in SciPyVersion.split('.')) < (0, 9, 0):
try:
import Scientific.IO.NetCDF as netcdf
except:
debug.deprint("Warning: Your SciPy version is too old (<0.9.0) and \nthe Scientific.IO.NetCDF module failed to import")
else:
try:
import scipy.io.netcdf as netcdf
except:
debug.deprint("Warning: Failed to import scipy.io.netcdf module")
import fluidity.diagnostics.calc as calc
import fluidity.diagnostics.filehandling as filehandling
import fluidity.diagnostics.structured_fields as structured_fields
class Era15:
"""
import os
import subprocess
import tempfile
import unittest
try:
import numpy
except ImportError:
debug.deprint("Warning: Failed to import numpy module")
import fluidity.diagnostics.debug as debug
try:
from fluidity_tools import *
except:
debug.deprint("Warning: Failed to import fluidity_tools module")
import fluidity.diagnostics.calc as calc
import fluidity.diagnostics.filehandling as filehandling
import fluidity.diagnostics.utils as utils
def FluidityBinary(binaries = ["dfluidity-debug", "dfluidity", "fluidity-debug", "fluidity"]):
"""
Return the command used to call Fluidity
"""
binary = None
for possibleBinary in binaries:
process = subprocess.Popen(["which", possibleBinary], stdout = subprocess.PIPE, stderr = subprocess.PIPE)
process.wait()
def ReadBinaryMshV2(fileHandle, dataSize):
if dataSize == 4:
realFormat = "f"
elif dataSize == 8:
realFormat = "d"
else:
raise Exception("Unrecognised real size " + str(dataSize))
swap = ByteSwap(fileHandle)
line = ReadNonCommentLine(fileHandle)
assert (line == "$EndMeshFormat")
# Read the Nodes section (no PhysicalNames section in binary)
line = ReadNonCommentLine(fileHandle)
assert (line == "$Nodes")
# number-of-nodes
# node-number x-coord y-coord z-coord
# ...
line = ReadNonCommentLine(fileHandle)
nNodes = int(line)
# Assume dense node IDs, but not necessarily ordered
seenNode = [False for i in range(nNodes)]
nodeIds = []
nodes = []
lbound = [calc.Inf() for i in range(3)]
ubound = [-calc.Inf() for i in range(3)]
for i in range(nNodes):
iArr = array.array("i")
rArr = array.array(realFormat)
iArr.fromfile(fileHandle, 1)
rArr.fromfile(fileHandle, 3)
if swap:
iArr.byteswap()
rArr.byteswap()
nodeId = iArr[0]
coord = rArr
assert (nodeId > 0)
assert (not seenNode[nodeId - 1])
seenNode[nodeId - 1] = True
nodeIds.append(nodeId)
nodes.append(coord)
for j in range(3):
lbound[j] = min(lbound[j], coord[j])
ubound[j] = max(ubound[j], coord[j])
line = ReadNonCommentLine(fileHandle)
assert (line == "$EndNodes")
nodes = utils.KeyedSort(nodeIds, nodes)
bound = bounds.BoundingBox(lbound, ubound)
indices = bound.UsedDimIndices()
dim = len(indices)
if dim < 3:
nodes = [[coord[index] for index in indices] for coord in nodes]
mesh = meshes.Mesh(dim)
mesh.AddNodeCoords(nodes)
# Read the Elements section
line = ReadNonCommentLine(fileHandle)
assert (line == "$Elements")
# number-of-elements
# element-header-binary
# element-binary
# ...
# where element-header-binary is: elm-type num-elm num-tags
# where element-binary is:
# num-elm * (4 + num-tags*4 + node-num*4)
# node-num physical-tag elementary-tag node-nums ...
line = ReadNonCommentLine(fileHandle)
nEles = int(line)
i = 0
while i < nEles:
iArr = array.array("i")
iArr.fromfile(fileHandle, 3)
if swap:
iArr.byteswap()
typeId = iArr[0]
nSubEles = iArr[1]
nIds = iArr[2]
type = GmshElementType(gmshElementTypeId=typeId)
for j in range(nSubEles):
iArr = array.array("i")
iArr.fromfile(fileHandle, 1 + nIds + type.GetNodeCount())
if swap:
iArr.byteswap()
eleId = iArr[0]
assert (eleId > 0)
ids = iArr[1:1 + nIds]
nodes = FromGmshNodeOrder(
utils.OffsetList(iArr[-type.GetNodeCount():], -1), type)
element = elements.Element(nodes, ids)
if type.GetDim() == dim - 1:
mesh.AddSurfaceElement(element)
elif type.GetDim() == dim:
mesh.AddVolumeElement(element)
else:
debug.deprint("Warning: Element of type " + str(type) +
" encountered in " + str(dim) + " dimensions")
i += nSubEles
assert (i == nEles)
line = ReadNonCommentLine(fileHandle)
assert (line == "$EndElements")
return mesh
"""
Some mathematical routines
"""
from __future__ import print_function
import copy
import math
import unittest
import fluidity.diagnostics.debug as debug
try:
import numpy
except ImportError:
debug.deprint("Warning: Failed to import numpy module")
try:
import scipy.linalg
except ImportError:
debug.deprint("Warning: Failed to import scipy.linalg module")
try:
import scipy.stats
except ImportError:
debug.deprint("Warning: Failed to import scipy.stats module")
try:
import vtk
except ImportError:
debug.deprint("Warning: Failed to import vtk module")
import fluidity.diagnostics.optimise as optimise
import fluidity.diagnostics.utils as utils
def WriteTriangle(mesh, baseName):
"""
Write triangle files with the given base name
"""
def FileFooter():
return "# Created by triangletools.WriteTriangle\n" + \
"# Command: " + " ".join(sys.argv) + "\n" + \
"# " + str(time.ctime()) + "\n"
debug.dprint("Writing triangle mesh with base name " + baseName)
# Write the .node file
debug.dprint("Writing .node file")
nodeHandle = open(baseName + ".node", "w")
# Write the meta data
nodeHandle.write(utils.FormLine([mesh.NodeCount(), mesh.GetDim(), 0, 0]))
# Write the nodes
for i in range(mesh.NodeCount()):
nodeHandle.write(utils.FormLine([i + 1, mesh.GetNodeCoord(i)]))
nodeHandle.write(FileFooter())
nodeHandle.close()
if mesh.GetDim() == 1:
# Write the .bound file
debug.dprint("Writing .bound file")
boundHandle = open(baseName + ".bound", "w")
# Write the meta data
nBoundIds = 0
for i in range(mesh.SurfaceElementCount()):
if i == 0:
nBoundIds = len(mesh.GetSurfaceElement(i).GetIds())
else:
assert(nBoundIds == len(mesh.GetSurfaceElement(i).GetIds()))
boundHandle.write(utils.FormLine([mesh.SurfaceElementCount(), nBoundIds]))
# Write the bounds
for i in range(mesh.SurfaceElementCount()):
boundHandle.write(utils.FormLine([i + 1, utils.OffsetList(mesh.GetSurfaceElement(i).GetNodes(), 1), mesh.GetSurfaceElement(i).GetIds()]))
boundHandle.write(FileFooter())
boundHandle.close()
elif mesh.GetDim() == 2:
# Write the .edge file
debug.dprint("Writing .edge file")
edgeHandle = open(baseName + ".edge", "w")
# Write the meta data
nEdgeIds = 0
for i in range(mesh.SurfaceElementCount()):
if i == 0:
nEdgeIds = len(mesh.GetSurfaceElement(i).GetIds())
else:
assert(nEdgeIds == len(mesh.GetSurfaceElement(i).GetIds()))
edgeHandle.write(utils.FormLine([mesh.SurfaceElementCount(), nEdgeIds]))
# Write the edges
for i in range(mesh.SurfaceElementCount()):
edgeHandle.write(utils.FormLine([i + 1, utils.OffsetList(mesh.GetSurfaceElement(i).GetNodes(), 1), mesh.GetSurfaceElement(i).GetIds()]))
edgeHandle.write(FileFooter())
edgeHandle.close()
elif mesh.GetDim() == 3:
# Write the .face file
debug.dprint("Writing .face file")
faceHandle = open(baseName + ".face", "w")
# Write the meta data
nFaceIds = 0
for i in range(mesh.SurfaceElementCount()):
if i == 0:
nFaceIds = len(mesh.GetSurfaceElement(i).GetIds())
else:
assert(nFaceIds == len(mesh.GetSurfaceElement(i).GetIds()))
faceHandle.write(utils.FormLine([mesh.SurfaceElementCount(), nFaceIds]))
# Write the faces
for i in range(mesh.SurfaceElementCount()):
faceHandle.write(utils.FormLine([i + 1, utils.OffsetList(mesh.GetSurfaceElement(i).GetNodes(), 1), mesh.GetSurfaceElement(i).GetIds()]))
faceHandle.write(FileFooter())
faceHandle.close()
# Write the .ele file
debug.dprint("Writing .ele file")
eleHandle = open(baseName + ".ele", "w")
# Write the meta data
nNodesPerEle = 0
nEleIds = 0
for i in range(mesh.VolumeElementCount()):
if i == 0:
nEleIds = len(mesh.GetVolumeElement(i).GetIds())
nNodesPerEle = mesh.GetVolumeElement(i).GetLoc()
else:
assert(nEleIds == len(mesh.GetVolumeElement(i).GetIds()))
assert(nNodesPerEle == mesh.GetVolumeElement(i).GetLoc())
eleHandle.write(utils.FormLine([mesh.VolumeElementCount(), nNodesPerEle, nEleIds]))
# Write the eles
for i in range(mesh.VolumeElementCount()):
# Note: Triangle mesh indexes nodes from 1, Mesh s index nodes from 0
eleHandle.write(utils.FormLine([i + 1, utils.OffsetList(mesh.GetVolumeElement(i).GetNodes(), 1), mesh.GetVolumeElement(i).GetIds()]))
eleHandle.write(FileFooter())
eleHandle.close()
halos = mesh.GetHalos()
if halos.HaloCount() > 0:
# Write the .halo file
debug.dprint("Writing .halo file")
if mesh_halos.HaloIOSupport():
mesh_halos.WriteHalos(halos, baseName + ".halo")
else:
debug.deprint("Warning: No .halo I/O support")
debug.dprint("Finished writing triangle file")
return
def ReadBinaryMshV4(fileHandle, dataSize):
if dataSize == 4:
sizeFormat = "i"
elif dataSize == 8:
sizeFormat = "l"
else:
raise Exception("Unrecognised size_t size " + str(dataSize))
swap = ByteSwap(fileHandle)
line = ReadNonCommentLine(fileHandle)
assert (line == "$EndMeshFormat")
# skip ahead to Nodes section (possibly bypassing Entities)
while line != "$Nodes":
line = ReadNonCommentLine(fileHandle)
assert (line == "$Nodes")
# numEntityBlock(size_t) numNodes(size_t)
# minNodeTag(size_t) maxNodeTag(size_t)
#
# entityDim(int) entityTag(int) parametric(int) numNodes(size_t)
#
# nodeTag(size_t) ...
# x(double) y(double) z(double) ...
# ...
sArr = array.array(sizeFormat)
sArr.fromfile(fileHandle, 4)
if swap:
sArr.byteswap()
numBlocks = sArr[0]
numNodes = sArr[1]
# assume dense nodes (we can check using the min/max id fields)
seenNode = [False] * numNodes
nodeIds = []
nodes = []
lbound = [calc.Inf() for i in range(3)]
ubound = [-calc.Inf() for i in range(3)]
for b in range(numBlocks):
iArr = array.array("i")
sArr = array.array(sizeFormat)
iArr.fromfile(fileHandle, 3)
sArr.fromfile(fileHandle, 1)
if swap:
iArr.byteswap()
sArr.byteswap()
subNodes = sArr[0]
tagArr = array.array(sizeFormat)
tagArr.fromfile(fileHandle, subNodes)
if swap:
tagArr.byteswap()
for i in range(subNodes):
rArr = array.array("d")
rArr.fromfile(fileHandle, 3)
if swap:
rArr.byteswap()
nodeId = tagArr[i]
coord = rArr
assert (nodeId > 0)
assert (not seenNode[nodeId - 1])
seenNode[nodeId - 1] = True
nodeIds.append(nodeId)
nodes.append(coord)
for j in range(3):
lbound[j] = min(lbound[j], coord[j])
ubound[j] = max(ubound[j], coord[j])
line = ReadNonCommentLine(fileHandle)
assert (line == "$EndNodes")
nodes = utils.KeyedSort(nodeIds, nodes)
bound = bounds.BoundingBox(lbound, ubound)
indices = bound.UsedDimIndices()
dim = len(indices)
if dim < 3:
nodes = [[coord[index] for index in indices] for coord in nodes]
mesh = meshes.Mesh(dim)
mesh.AddNodeCoords(nodes)
# read the Elements section
line = ReadNonCommentLine(fileHandle)
assert (line == "$Elements")
# numEntityBlocks(size_t) numElements(size_t)
# minElementTag(size_t) maxElementTag(size_t)
#
# entityDim(int) entityTag(int) elementType(int) numElems(size_t)
# elementTag(size_t) nodeTag(size_t) ...
# ...
# ...
sArr = array.array(sizeFormat)
sArr.fromfile(fileHandle, 4)
if swap:
sArr.byteswap()
numEntities = sArr[0]
numElems = sArr[1]
for i in range(numEntities):
iArr = array.array("i")
sArr = array.array(sizeFormat)
iArr.fromfile(fileHandle, 3)
sArr.fromfile(fileHandle, 1)
if swap:
iArr.byteswap()
sArr.byteswap()
entityDim = iArr[0]
entityTag = iArr[1]
elementType = iArr[2]
elemsInBlock = sArr[0]
type = GmshElementType(gmshElementTypeId=elementType)
for j in range(elemsInBlock):
sArr = array.array(sizeFormat)
sArr.fromfile(1 + type.GetNodeCount())
if swap:
sArr.byteswap()
ids = [entityTag, sArr[0]]
nodes = FromGmshNodeOrder(utils.OffsetList(sArr[1:], -1), type)
element = elements.Element(nodes, ids)
if type.GetDim() == dim - 1:
mesh.AddSurfaceElement(element)
elif type.GetDim() == dim:
mesh.AddVolumeElement(element)
else:
debug.deprint("Warning: Element of type " + str(type) +
" encountered in " + str(dim) + " dimensions")
line = ReadNonCommentLine(fileHandle)
assert (line == "$EndElements")
return mesh
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""
Finite element element classes
"""
import copy
import unittest
import fluidity.diagnostics.debug as debug
try:
import numpy
except ImportError:
debug.deprint("Warning: Failed to import numpy module")
try:
import scipy
except ImportError:
debug.deprint("Warning: Failed to import scipy module")
try:
import scipy.interpolate
except ImportError:
debug.deprint("Warning: Failed to import scipy.interpolate module")
import fluidity.diagnostics.calc as calc
import fluidity.diagnostics.events as events
import fluidity.diagnostics.optimise as optimise
import fluidity.diagnostics.utils as utils
def NumpySupport():
def ReadAsciiMshV2(fileHandle):
line = ReadNonCommentLine(fileHandle)
assert (line == "$EndMeshFormat")
# Read the Nodes section
line = ReadNonCommentLine(fileHandle)
assert (line == "$Nodes")
line = ReadNonCommentLine(fileHandle)
nNodes = int(line)
# Assume dense node IDs, but not necessarily ordered
seenNode = [False for i in range(nNodes)]
nodeIds = []
nodes = []
lbound = [calc.Inf() for i in range(3)]
ubound = [-calc.Inf() for i in range(3)]
for i in range(nNodes):
line = ReadNonCommentLine(fileHandle)
lineSplit = line.split()
assert (len(lineSplit) == 4)
nodeId = int(lineSplit[0])
coord = [float(comp) for comp in lineSplit[1:]]
assert (nodeId > 0)
assert (not seenNode[nodeId - 1])
seenNode[nodeId - 1] = True
nodeIds.append(nodeId)
nodes.append(coord)
for j in range(3):
lbound[j] = min(lbound[j], coord[j])
ubound[j] = max(ubound[j], coord[j])
line = ReadNonCommentLine(fileHandle)
assert (line == "$EndNodes")
nodes = utils.KeyedSort(nodeIds, nodes)
bound = bounds.BoundingBox(lbound, ubound)
indices = bound.UsedDimIndices()
dim = len(indices)
if dim < 3:
nodes = [[coord[index] for index in indices] for coord in nodes]
mesh = meshes.Mesh(dim)
mesh.AddNodeCoords(nodes)
# Read the Elements section
line = ReadNonCommentLine(fileHandle)
assert (line == "$Elements")
line = ReadNonCommentLine(fileHandle)
nEles = int(line)
for i in range(nEles):
line = ReadNonCommentLine(fileHandle)
lineSplit = line.split()
assert (len(lineSplit) > 3)
eleId = int(lineSplit[0])
assert (eleId > 0)
typeId = int(lineSplit[1])
nIds = int(lineSplit[2])
type = GmshElementType(gmshElementTypeId=typeId)
ids = [int(id) for id in lineSplit[3:3 + nIds]]
nodes = FromGmshNodeOrder(
[int(node) - 1 for node in lineSplit[-type.GetNodeCount():]], type)
element = elements.Element(nodes, ids)
if type.GetDim() == dim - 1:
mesh.AddSurfaceElement(element)
elif type.GetDim() == dim:
mesh.AddVolumeElement(element)
else:
debug.deprint("Warning: Element of type " + str(type) +
" encountered in " + str(dim) + " dimensions")
line = ReadNonCommentLine(fileHandle)
assert (line == "$EndElements")
return mesh
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""
Finite element mesh classes
"""
import unittest
import fluidity.diagnostics.debug as debug
try:
import numpy
except:
debug.deprint("Warning: Failed to import numpy module")
import fluidity.diagnostics.bounds as bounds
import fluidity.diagnostics.calc as calc
import fluidity.diagnostics.elements as elements
import fluidity.diagnostics.events as events
import fluidity.diagnostics.mesh_halos as mesh_halos
import fluidity.diagnostics.optimise as optimise
import fluidity.diagnostics.utils as utils
import fluidity.diagnostics.vtutools as vtktools
try:
import vtk
except ImportError:
debug.deprint("Warning: Failed to import vtk module")
def ReadMsh(filename):
"""
Read a Gmsh msh file
"""
def ReadNonCommentLine(fileHandle):
line = fileHandle.readline()
while len(line) > 0:
line = line.strip()
if len(line) > 0:
return line
line = fileHandle.readline()
return line
fileHandle = open(filename, "r")
basename = filename.split(".")[0]
hasHalo = filehandling.FileExists(basename + ".halo")
# Read the MeshFormat section
line = ReadNonCommentLine(fileHandle)
assert(line == "$MeshFormat")
line = ReadNonCommentLine(fileHandle)
lineSplit = line.split()
assert(len(lineSplit) == 3)
version = float(lineSplit[0])
fileType = int(lineSplit[1])
dataSize = int(lineSplit[2])
if fileType == 1:
# Binary format
if dataSize == 4:
realFormat = "f"
elif dataSize == 8:
realFormat = "d"
else:
raise Exception("Unrecognised real size " + str(dataSize))
iArr = array.array("i")
iArr.fromfile(fileHandle, 1)
if iArr[0] == 1:
swap = False
else:
iArr.byteswap()
if iArr[0] == 1:
swap = True
else:
raise Exception("Invalid one byte")
line = ReadNonCommentLine(fileHandle)
assert(line == "$EndMeshFormat")
# Read the Nodes section
line = ReadNonCommentLine(fileHandle)
assert(line == "$Nodes")
line = ReadNonCommentLine(fileHandle)
nNodes = int(line)
# Assume dense node IDs, but not necessarily ordered
seenNode = [False for i in range(nNodes)]
nodeIds = []
nodes = []
lbound = [calc.Inf() for i in range(3)]
ubound = [-calc.Inf() for i in range(3)]
for i in range(nNodes):
iArr = array.array("i")
rArr = array.array(realFormat)
iArr.fromfile(fileHandle, 1)
rArr.fromfile(fileHandle, 3)
if swap:
iArr.byteswap()
rArr.byteswap()
nodeId = iArr[0]
coord = rArr
assert(nodeId > 0)
assert(not seenNode[nodeId - 1])
seenNode[nodeId - 1] = True
nodeIds.append(nodeId)
nodes.append(coord)
for j in range(3):
lbound[j] = min(lbound[j], coord[j])
ubound[j] = max(ubound[j], coord[j])
line = ReadNonCommentLine(fileHandle)
assert(line == "$EndNodes")
nodes = utils.KeyedSort(nodeIds, nodes)
bound = bounds.BoundingBox(lbound, ubound)
indices = bound.UsedDimIndices()
dim = len(indices)
if dim < 3:
nodes = [[coord[index] for index in indices] for coord in nodes]
mesh = meshes.Mesh(dim)
mesh.AddNodeCoords(nodes)
# Read the Elements section
line = ReadNonCommentLine(fileHandle)
assert(line == "$Elements")
line = ReadNonCommentLine(fileHandle)
nEles = int(line)
i = 0
while i < nEles:
iArr = array.array("i")
iArr.fromfile(fileHandle, 3)
if swap:
iArr.byteswap()
typeId = iArr[0]
nSubEles = iArr[1]
nIds = iArr[2]
type = GmshElementType(gmshElementTypeId = typeId)
for j in range(nSubEles):
iArr = array.array("i")
iArr.fromfile(fileHandle, 1 + nIds + type.GetNodeCount())
if swap:
iArr.byteswap()
eleId = iArr[0]
assert(eleId > 0)
ids = iArr[1:1 + nIds]
nodes = FromGmshNodeOrder(utils.OffsetList(iArr[-type.GetNodeCount():], -1), type)
element = elements.Element(nodes, ids)
if type.GetDim() == dim - 1:
mesh.AddSurfaceElement(element)
elif type.GetDim() == dim:
mesh.AddVolumeElement(element)
else:
debug.deprint("Warning: Element of type " + str(type) + " encountered in " + str(dim) + " dimensions")
i += nSubEles
assert(i == nEles)
line = ReadNonCommentLine(fileHandle)
assert(line == "$EndElements")
elif fileType == 0:
# ASCII format
line = ReadNonCommentLine(fileHandle)
assert(line == "$EndMeshFormat")
# Read the Nodes section
line = ReadNonCommentLine(fileHandle)
assert(line == "$Nodes")
line = ReadNonCommentLine(fileHandle)
nNodes = int(line)
# Assume dense node IDs, but not necessarily ordered
seenNode = [False for i in range(nNodes)]
nodeIds = []
nodes = []
lbound = [calc.Inf() for i in range(3)]
ubound = [-calc.Inf() for i in range(3)]
for i in range(nNodes):
line = ReadNonCommentLine(fileHandle)
lineSplit = line.split()
assert(len(lineSplit) == 4)
nodeId = int(lineSplit[0])
coord = [float(comp) for comp in lineSplit[1:]]
assert(nodeId > 0)
assert(not seenNode[nodeId - 1])
seenNode[nodeId - 1] = True
nodeIds.append(nodeId)
nodes.append(coord)
for j in range(3):
lbound[j] = min(lbound[j], coord[j])
ubound[j] = max(ubound[j], coord[j])
line = ReadNonCommentLine(fileHandle)
assert(line == "$EndNodes")
nodes = utils.KeyedSort(nodeIds, nodes)
bound = bounds.BoundingBox(lbound, ubound)
indices = bound.UsedDimIndices()
dim = len(indices)
if dim < 3:
nodes = [[coord[index] for index in indices] for coord in nodes]
mesh = meshes.Mesh(dim)
mesh.AddNodeCoords(nodes)
# Read the Elements section
line = ReadNonCommentLine(fileHandle)
assert(line == "$Elements")
line = ReadNonCommentLine(fileHandle)
nEles = int(line)
for i in range(nEles):
line = ReadNonCommentLine(fileHandle)
lineSplit = line.split()
assert(len(lineSplit) > 3)
eleId = int(lineSplit[0])
assert(eleId > 0)
typeId = int(lineSplit[1])
nIds = int(lineSplit[2])
type = GmshElementType(gmshElementTypeId = typeId)
ids = [int(id) for id in lineSplit[3:3 + nIds]]
nodes = FromGmshNodeOrder([int(node) - 1 for node in lineSplit[-type.GetNodeCount():]], type)
element = elements.Element(nodes, ids)
if type.GetDim() == dim - 1:
mesh.AddSurfaceElement(element)
elif type.GetDim() == dim:
mesh.AddVolumeElement(element)
else:
debug.deprint("Warning: Element of type " + str(type) + " encountered in " + str(dim) + " dimensions")
line = ReadNonCommentLine(fileHandle)
assert(line == "$EndElements")
# Ignore all remaining sections
else:
raise Exception("File type " + str(fileType) + " not recognised")
fileHandle.close()
if hasHalo:
# Read the .halo file
debug.dprint("Reading .halo file")
if mesh_halos.HaloIOSupport():
halos = mesh_halos.ReadHalos(basename + ".halo")
mesh.SetHalos(halos)
else:
debug.deprint("Warning: No .halo I/O support")
return mesh
"""
VTK tools
"""
import copy
import math
import sys
import unittest
import fluidity.diagnostics.debug as debug
try:
import vtk
except ImportError:
debug.deprint("Warning: Failed to import vtk module")
try:
from vtktools import *
except ImportError:
debug.deprint("Warning: Failed to import vtktools module")
import fluidity.diagnostics.bounds as bounds
import fluidity.diagnostics.calc as calc
import fluidity.diagnostics.elements as elements
import fluidity.diagnostics.optimise as optimise
import fluidity.diagnostics.simplices as simplices
import fluidity.diagnostics.utils as utils
def VtkSupport():
return "vtk" in globals()
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""
ERA data set handling routines
"""
import datetime
import math
import os
import unittest
import fluidity.diagnostics.debug as debug
try:
import Scientific.IO.NetCDF as netcdf
except:
debug.deprint("Warning: Failed to import Scientific.IO.NetCDF module")
import fluidity.diagnostics.calc as calc
import fluidity.diagnostics.filehandling as filehandling
import fluidity.diagnostics.structured_fields as structured_fields
class Era15:
"""
Class for handling ERA15 10m wind data
"""
# Zero point for time data
_epoch = datetime.datetime(1900, 1, 1, 0, 0, 0)
def __init__(self,
"""
import os
import tempfile
import unittest
import fluidity.diagnostics.debug as debug
try:
import xml.dom.ext
except ImportError:
pass
try:
import xml.dom.minidom
except ImportError:
debug.deprint("Warning: Failed to import xml.dom.minidom module")
import fluidity.diagnostics.filehandling as filehandling
import fluidity.diagnostics.optimise as optimise
import fluidity.diagnostics.utils as utils
def XmlSupport():
try:
import xml.dom.minidom
return True
except ImportError:
return False
def XmlExtSupport():
try:
import xml.dom.ext
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""
Finite element element classes
"""
import copy
import unittest
import fluidity.diagnostics.debug as debug
try:
import numpy
except ImportError:
debug.deprint("Warning: Failed to import numpy module")
try:
import scipy
except ImportError:
debug.deprint("Warning: Failed to import scipy module")
try:
import scipy.interpolate
except ImportError:
debug.deprint("Warning: Failed to import scipy.interpolate module")
import fluidity.diagnostics.calc as calc
import fluidity.diagnostics.events as events
import fluidity.diagnostics.optimise as optimise
import fluidity.diagnostics.utils as utils
def NumpySupport():
Graph plotting utilities
"""
import os
import tempfile
import unittest
import fluidity.diagnostics.debug as debug
import fluidity.diagnostics.gui as gui
import fluidity.diagnostics.utils as utils
if not gui.GuiDisabledByEnvironment():
try:
import matplotlib
except ImportError:
debug.deprint("Warning: Failed to import matplotlib module")
def MatplotlibSupport():
return "matplotlib" in globals()
if MatplotlibSupport():
matplotlib.use("Cairo")
try:
import matplotlib.backends.backend_gtk
except:
debug.deprint("Warning: Failed to import matplotlib.backends.backend_gtk module")
if not gui.GuiDisabledByEnvironment():
try:
Graph plotting utilities
"""
import os
import tempfile
import unittest
import fluidity.diagnostics.debug as debug
import fluidity.diagnostics.gui as gui
import fluidity.diagnostics.utils as utils
if not gui.GuiDisabledByEnvironment():
try:
import matplotlib
except ImportError:
debug.deprint("Warning: Failed to import matplotlib module")
def MatplotlibSupport():
return "matplotlib" in globals()
if MatplotlibSupport():
matplotlib.use("Cairo")
try:
import matplotlib.backends.backend_gtk
except:
debug.deprint(
"Warning: Failed to import matplotlib.backends.backend_gtk module")
if not gui.GuiDisabledByEnvironment():
def ReadMsh(filename):
"""
Read a Gmsh msh file
"""
def ReadNonCommentLine(fileHandle):
line = fileHandle.readline()
while len(line) > 0:
line = line.strip()
if len(line) > 0:
return line
line = fileHandle.readline()
return line
fileHandle = open(filename, "r")
# Read the MeshFormat section
line = ReadNonCommentLine(fileHandle)
assert(line == "$MeshFormat")
line = ReadNonCommentLine(fileHandle)
lineSplit = line.split()
assert(len(lineSplit) == 3)
version = float(lineSplit[0])
fileType = int(lineSplit[1])
dataSize = int(lineSplit[2])
if fileType == 1:
# Binary format
if dataSize == 4:
realFormat = "f"
elif dataSize == 8:
realFormat = "d"
else:
raise Exception("Unrecognised real size " + str(dataSize))
iArr = array.array("i")
iArr.fromfile(fileHandle, 1)
if iArr[0] == 1:
swap = False
else:
iArr.byteswap()
if iArr[0] == 1:
swap = True
else:
raise Exception("Invalid one byte")
line = ReadNonCommentLine(fileHandle)
assert(line == "$EndMeshFormat")
# Read the Nodes section
line = ReadNonCommentLine(fileHandle)
assert(line == "$Nodes")
line = ReadNonCommentLine(fileHandle)
nNodes = int(line)
# Assume dense node IDs, but not necessarily ordered
seenNode = [False for i in range(nNodes)]
nodeIds = []
nodes = []
lbound = [calc.Inf() for i in range(3)]
ubound = [-calc.Inf() for i in range(3)]
for i in range(nNodes):
iArr = array.array("i")
rArr = array.array(realFormat)
iArr.fromfile(fileHandle, 1)
rArr.fromfile(fileHandle, 3)
if swap:
iArr.byteswap()
rArr.byteswap()
nodeId = iArr[0]
coord = rArr
assert(nodeId > 0)
assert(not seenNode[nodeId - 1])
seenNode[nodeId - 1] = True
nodeIds.append(nodeId)
nodes.append(coord)
for j in range(3):
lbound[j] = min(lbound[j], coord[j])
ubound[j] = max(ubound[j], coord[j])
line = ReadNonCommentLine(fileHandle)
assert(line == "$EndNodes")
nodes = utils.KeyedSort(nodeIds, nodes)
bound = bounds.BoundingBox(lbound, ubound)
indices = bound.UsedDimIndices()
dim = len(indices)
if dim < 3:
nodes = [[coord[index] for index in indices] for coord in nodes]
mesh = meshes.Mesh(dim)
mesh.AddNodeCoords(nodes)
# Read the Elements section
line = ReadNonCommentLine(fileHandle)
assert(line == "$Elements")
line = ReadNonCommentLine(fileHandle)
nEles = int(line)
i = 0
while i < nEles:
iArr = array.array("i")
iArr.fromfile(fileHandle, 3)
if swap:
iArr.byteswap()
typeId = iArr[0]
nSubEles = iArr[1]
assert(nSubEles > 0) # Helps avoid inf looping
nIds = iArr[2]
type = GmshElementType(gmshElementTypeId = typeId)
for j in range(nSubEles):
iArr = array.array("i")
iArr.fromfile(fileHandle, 1 + nIds + type.GetNodeCount())
if swap:
iArr.byteswap()
eleId = iArr[0]
assert(eleId > 0)
ids = iArr[1:1 + nIds]
nodes = FromGmshNodeOrder(utils.OffsetList(iArr[-type.GetNodeCount():], -1), type)
element = elements.Element(nodes, ids)
if type.GetDim() == dim - 1:
mesh.AddSurfaceElement(element)
elif type.GetDim() == dim:
mesh.AddVolumeElement(element)
else:
debug.deprint("Warning: Element of type " + str(type) + " encountered in " + str(dim) + " dimensions")
i += nSubEles
assert(i == nEles)
line = ReadNonCommentLine(fileHandle)
assert(line == "$EndElements")
elif fileType == 0:
# ASCII format
line = ReadNonCommentLine(fileHandle)
assert(line == "$EndMeshFormat")
# Read the Nodes section
line = ReadNonCommentLine(fileHandle)
assert(line == "$Nodes")
line = ReadNonCommentLine(fileHandle)
nNodes = int(line)
# Assume dense node IDs, but not necessarily ordered
seenNode = [False for i in range(nNodes)]
nodeIds = []
nodes = []
lbound = [calc.Inf() for i in range(3)]
ubound = [-calc.Inf() for i in range(3)]
for i in range(nNodes):
line = ReadNonCommentLine(fileHandle)
lineSplit = line.split()
assert(len(lineSplit) == 4)
nodeId = int(lineSplit[0])
coord = [float(comp) for comp in lineSplit[1:]]
assert(nodeId > 0)
assert(not seenNode[nodeId - 1])
seenNode[nodeId - 1] = True
nodeIds.append(nodeId)
nodes.append(coord)
for j in range(3):
lbound[j] = min(lbound[j], coord[j])
ubound[j] = max(ubound[j], coord[j])
line = ReadNonCommentLine(fileHandle)
assert(line == "$EndNodes")
nodes = utils.KeyedSort(nodeIds, nodes)
bound = bounds.BoundingBox(lbound, ubound)
indices = bound.UsedDimIndices()
dim = len(indices)
if dim < 3:
nodes = [[coord[index] for index in indices] for coord in nodes]
mesh = meshes.Mesh(dim)
mesh.AddNodeCoords(nodes)
# Read the Elements section
line = ReadNonCommentLine(fileHandle)
assert(line == "$Elements")
line = ReadNonCommentLine(fileHandle)
nEles = int(line)
for i in range(nEles):
line = ReadNonCommentLine(fileHandle)
lineSplit = line.split()
assert(len(lineSplit) > 3)
eleId = int(lineSplit[0])
assert(eleId > 0)
typeId = int(lineSplit[1])
nIds = int(lineSplit[3])
type = GmshElementType(gmshElementTypeId = typeId)
ids = [int(id) for id in lineSplit[3:3 + nIds]]
nodes = FromGmshNodeOrder([int(node) - 1 for node in lineSplit[-type.GetNodeCount():]], type)
element = elements.Element(nodes, ids)
if type.GetDim() == dim - 1:
mesh.AddSurfaceElement(element)
elif type.GetDim() == dim:
mesh.AddVolumeElement(element)
else:
debug.deprint("Warning: Element of type " + str(type) + " encountered in " + str(dim) + " dimensions")
line = ReadNonCommentLine(fileHandle)
assert(line == "$EndElements")
# Ignore all remaining sections
else:
raise Exception("File type " + str(fileType) + " not recognised")
fileHandle.close()
return mesh
def ReadGid(filename):
"""
Read a GiD file with the given filename, and return it as a mesh
"""
debug.dprint("Reading GiD mesh with filename " + filename)
fileHandle = open(filename, "r")
# Read the header
header = fileHandle.readline()
lineSplit = header.split()
assert(lineSplit[0] == "MESH")
dimension = None
elemType = None
nnode = None
for i, word in enumerate(lineSplit[:len(lineSplit) - 1]):
if word == "dimension":
dimension = int(lineSplit[i + 1])
assert(dimension >= 0)
elif word == "ElemType":
elemType = lineSplit[i + 1]
elif word == "Nnode":
nnode = int(lineSplit[i + 1])
assert(nnode >= 0)
assert(not dimension is None)
assert(not elemType is None)
assert(not nnode is None)
debug.dprint("Dimension = " + str(dimension))
debug.dprint("Element type = " + elemType)
debug.dprint("Element nodes = " + str(nnode))
# Read the nodes
nodeCoords = []
line = fileHandle.readline()
index = 0
while len(line) > 0:
if line.strip() == "Coordinates":
line = fileHandle.readline()
while not line.strip() == "end coordinates":
assert(len(line) > 0)
index += 1
lineSplit = line.split()
assert(len(lineSplit) == 1 + dimension)
assert(int(lineSplit[0]) == index)
nodeCoords.append([float(coord) for coord in lineSplit[1:]])
line = fileHandle.readline()
break
line = fileHandle.readline()
debug.dprint("Nodes: " + str(index))
# Check for unused dimensions
lbound = [calc.Inf() for i in range(dimension)]
ubound = [-calc.Inf() for i in range(dimension)]
for nodeCoord in nodeCoords:
for i, val in enumerate(nodeCoord):
lbound[i] = min(lbound[i], val)
ubound[i] = max(ubound[i], val)
boundingBox = bounds.BoundingBox(lbound, ubound)
actualDimension = boundingBox.UsedDim()
if not dimension == actualDimension:
debug.deprint("Dimension suggested by bounds = " + str(actualDimension))
debug.deprint("Warning: Header dimension inconsistent with bounds")
dimension = actualDimension
coordMask = boundingBox.UsedDimCoordMask()
nodeCoords = [utils.MaskList(nodeCoord, coordMask) for nodeCoord in nodeCoords]
mesh = meshes.Mesh(dimension)
mesh.AddNodeCoords(nodeCoords)
fileHandle.seek(0)
# Read the volume elements
line = fileHandle.readline()
index = 0
while len(line) > 0:
if line.strip() == "Elements":
line = fileHandle.readline()
while not line.strip() == "end elements":
assert(len(line) > 0)
index += 1
lineSplit = line.split()
assert(len(lineSplit) == 1 + nnode)
assert(int(lineSplit[0]) == index)
# Note: GiD file indexes nodes from 1, Mesh s index nodes from 0
mesh.AddVolumeElement(elements.Element(nodes = FromGidNodeOrder([int(node) - 1 for node in lineSplit[1:]], elements.ElementType(dim = dimension, nodeCount = nnode))))
line = fileHandle.readline()
break
line = fileHandle.readline()
debug.dprint("Elements: " + str(index))
fileHandle.close()
debug.dprint("Finished reading GiD mesh")
return mesh
import datetime
import math
import os
import unittest
import fluidity.diagnostics.debug as debug
from scipy.version import version as SciPyVersion
if tuple(int(x) for x in SciPyVersion.split('.')) < (0, 9, 0):
try:
import Scientific.IO.NetCDF as netcdf
except:
debug.deprint(
"Warning: Your SciPy version is too old (<0.9.0) and \nthe Scientific.IO.NetCDF module failed to import"
)
else:
try:
import scipy.io.netcdf as netcdf
except:
debug.deprint("Warning: Failed to import scipy.io.netcdf module")
import fluidity.diagnostics.calc as calc
import fluidity.diagnostics.filehandling as filehandling
import fluidity.diagnostics.structured_fields as structured_fields
class Era15:
"""
Class for handling ERA15 10m wind data
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""
Structured field classes
"""
import copy
import math
import unittest
import fluidity.diagnostics.debug as debug
try:
import numpy
except:
debug.deprint("Warning: Failed to import numpy module")
try:
import vtk
except:
debug.deprint("Warning: Failed to import vtk module")
import fluidity.diagnostics.annulus_mesh as annulus_mesh
import fluidity.diagnostics.calc as calc
import fluidity.diagnostics.elements as elements
import fluidity.diagnostics.meshes as meshes
import fluidity.diagnostics.optimise as optimise
import fluidity.diagnostics.utils as utils
class StructuredField2D:
def __init__(self, xCoords, yCoords, type = None, shape = None, data = None, name = None):
if type is None:
import os
import subprocess
import tempfile
import unittest
try:
import numpy
except ImportError:
debug.deprint("Warning: Failed to import numpy module")
import fluidity.diagnostics.debug as debug
try:
from fluidity_tools import *
except:
debug.deprint("Warning: Failed to import fluidity_tools module")
import fluidity.diagnostics.calc as calc
import fluidity.diagnostics.filehandling as filehandling
import fluidity.diagnostics.utils as utils
def FluidityBinary(
binaries=[
"dfluidity-debug", "dfluidity", "fluidity-debug", "fluidity"
]):
"""
Return the command used to call Fluidity
"""
binary = None
"""
ERA data set handling routines
"""
import datetime
import math
import os
import unittest
import fluidity.diagnostics.debug as debug
try:
import Scientific.IO.NetCDF as netcdf
except:
debug.deprint("Warning: Failed to import Scientific.IO.NetCDF module")
import fluidity.diagnostics.calc as calc
import fluidity.diagnostics.filehandling as filehandling
import fluidity.diagnostics.structured_fields as structured_fields
class Era15:
"""
Class for handling ERA15 10m wind data
"""
# Zero point for time data
_epoch = datetime.datetime(1900, 1, 1, 0, 0, 0)
def __init__(self, filename, latitudeName = "latitude", longitudeName = "longitude", timeName = "time"):
self._file = netcdf.NetCDFFile(filename, "r")
def ReadTriangle(baseName):
"""
Read triangle files with the given base name, and return it as a mesh
"""
def StripComment(line):
if "#" in line:
return line.split("#")[0]
else:
return line
def ReadNonCommentLine(fileHandle):
line = fileHandle.readline()
while len(line) > 0:
line = StripComment(line).strip()
if len(line) > 0:
return line
line = fileHandle.readline()
return line
# Determine which files exist
assert(filehandling.FileExists(baseName + ".node"))
hasBound = filehandling.FileExists(baseName + ".bound")
hasEdge = filehandling.FileExists(baseName + ".edge")
hasFace = filehandling.FileExists(baseName + ".face")
hasEle = filehandling.FileExists(baseName + ".ele")
hasHalo = filehandling.FileExists(baseName + ".halo")
# Read the .node file
nodeHandle = open(baseName + ".node", "r")
# Extract the meta data
line = ReadNonCommentLine(nodeHandle)
lineSplit = line.split()
assert(len(lineSplit) == 4)
nNodes = int(lineSplit[0])
assert(nNodes >= 0)
dim = int(lineSplit[1])
assert(dim >= 0)
nNodeAttrs = int(lineSplit[2])
assert(nNodeAttrs >= 0)
nNodeIds = int(lineSplit[3])
assert(nNodeIds >= 0)
mesh = meshes.Mesh(dim)
# Read the nodes
debug.dprint("Reading .node file")
for line in nodeHandle.readlines():
line = StripComment(line)
if len(line.strip()) == 0:
continue
lineSplit = line.split()
assert(len(lineSplit) == 1 + dim + nNodeAttrs + nNodeIds)
mesh.AddNodeCoord([float(coord) for coord in lineSplit[1:dim + 1]])
assert(mesh.NodeCoordsCount() == nNodes)
nodeHandle.close()
if hasBound and dim == 1:
# Read the .bound file
debug.dprint("Reading .bound file")
boundHandle = open(baseName + ".bound", "r")
# Extract the meta data
line = ReadNonCommentLine(boundHandle)
lineSplit = line.split()
assert(len(lineSplit) == 2)
nBounds = int(lineSplit[0])
assert(nBounds >= 0)
nBoundIds = int(lineSplit[1])
assert(nBoundIds >= 0)
# Read the bounds
for line in boundHandle.readlines():
line = StripComment(line)
if len(line.strip()) == 0:
continue
lineSplit = line.split()
assert(len(lineSplit) == 2 + nBoundIds)
element = elements.Element()
for node in lineSplit[1:2]:
element.AddNode(int(node) - 1)
element.SetIds([int(boundId) for boundId in lineSplit[2:]])
mesh.AddSurfaceElement(element)
assert(mesh.SurfaceElementCount() == nBounds)
boundHandle.close()
if hasEdge and dim == 2:
# Read the .edge file
debug.dprint("Reading .edge file")
edgeHandle = open(baseName + ".edge", "r")
# Extract the meta data
line = ReadNonCommentLine(edgeHandle)
lineSplit = line.split()
assert(len(lineSplit) == 2)
nEdges = int(lineSplit[0])
assert(nEdges >= 0)
nEdgeIds = int(lineSplit[1])
assert(nEdgeIds >= 0)
# Read the edges
for line in edgeHandle.readlines():
line = StripComment(line)
if len(line.strip()) == 0:
continue
lineSplit = line.split()
assert(len(lineSplit) == 3 + nEdgeIds)
element = elements.Element()
for node in lineSplit[1:3]:
element.AddNode(int(node) - 1)
element.SetIds([int(edgeId) for edgeId in lineSplit[3:]])
mesh.AddSurfaceElement(element)
assert(mesh.SurfaceElementCount() == nEdges)
edgeHandle.close()
if hasFace and dim > 2:
# Read the .face file
debug.dprint("Reading .face file")
faceHandle = open(baseName + ".face", "r")
# Extract the meta data
line = ReadNonCommentLine(faceHandle)
lineSplit = line.split()
assert(len(lineSplit) == 2)
nFaces = int(lineSplit[0])
assert(nFaces >= 0)
nFaceIds = int(lineSplit[1])
assert(nFaceIds >= 0)
# Read the faces
for line in faceHandle.readlines():
line = StripComment(line)
if len(line.strip()) == 0:
continue
lineSplit = line.split()
assert(len(lineSplit) >= 4 + nFaceIds)
element = elements.Element()
for node in lineSplit[1:len(lineSplit) - nFaceIds]:
element.AddNode(int(node) - 1)
element.SetIds([int(faceId) for faceId in lineSplit[len(lineSplit) - nFaceIds:]])
mesh.AddSurfaceElement(element)
assert(mesh.SurfaceElementCount() == nFaces)
faceHandle.close()
if hasEle:
# Read the .ele file
debug.dprint("Reading .ele file")
eleHandle = open(baseName + ".ele", "r")
# Extract the meta data
line = ReadNonCommentLine(eleHandle)
lineSplit = line.split()
assert(len(lineSplit) == 3)
nEles = int(lineSplit[0])
assert(nEles >= 0)
nNodesPerEle = int(lineSplit[1])
assert(nNodesPerEle >= 0)
nEleIds = int(lineSplit[2])
assert(nEleIds >= 0)
# Read the eles
for line in eleHandle.readlines():
line = StripComment(line)
if len(line.strip()) == 0:
continue
lineSplit = line.split()
assert(len(lineSplit) == 1 + nNodesPerEle + nEleIds)
element = elements.Element()
for node in lineSplit[1:len(lineSplit) - nEleIds]:
element.AddNode(int(node) - 1)
element.SetIds([int(eleId) for eleId in lineSplit[len(lineSplit) - nEleIds:]])
mesh.AddVolumeElement(element)
assert(mesh.VolumeElementCount() == nEles)
eleHandle.close()
if hasHalo:
# Read the .halo file
debug.dprint("Reading .halo file")
if mesh_halos.HaloIOSupport():
halos = mesh_halos.ReadHalos(baseName + ".halo")
mesh.SetHalos(halos)
else:
debug.deprint("Warning: No .halo I/O support")
return mesh
import os
import unittest
import fluidity.diagnostics.debug as debug
import fluidity.diagnostics.optimise as optimise
import fluidity.diagnostics.utils as utils
def GuiDisabledByEnvironment():
return "DIAGNOSTICS_GUI_DISABLED" in os.environ and os.environ["DIAGNOSTICS_GUI_DISABLED"]
if not GuiDisabledByEnvironment():
try:
import gobject
except:
debug.deprint("Warning: Failed to import gobject module")
try:
import gtk
except:
debug.deprint("Warning: Failed to import gtk module")
def DisplayWindow(window):
"""
Launch the GTK main loop to display the supplied window
"""
window.connect("destroy", gtk.main_quit)
window.show()
gtk.main()
return
