def subArrays(
array1,
array2,
array3=None,
verbose=0):
mypy.my_print(verbose, "*** subArrays ***")
n_components = array1.GetNumberOfComponents()
assert (array2.GetNumberOfComponents() == n_components)
n_tuples = array1.GetNumberOfTuples()
assert (array2.GetNumberOfTuples() == n_tuples)
array_type = type(array1.GetTuple(0)[0])
assert (array_type in [int, float])
assert (type(array2.GetTuple(0)[0]) is array_type)
if (array3 is None):
array3 = myvtk.createArray(
name="",
n_components=n_components,
n_tuples=n_tuples,
array_type=array_type)
else:
assert (array3.GetNumberOfComponents() == n_components)
assert (array3.GetNumberOfTuples() == n_tuples)
assert (type(array3.GetTuple(0)[0]) is array_type)
for k_tuple in xrange(n_tuples):
array3.SetTuple(
k_tuple,
numpy.array(array1.GetTuple(k_tuple)) - numpy.array(array2.GetTuple(k_tuple)))
return array3
def addArrays(
array1,
array2,
array3=None,
verbose=0):
myVTK.myPrint(verbose, "*** addArrays ***")
n_components = array1.GetNumberOfComponents()
assert (array2.GetNumberOfComponents() == n_components)
if (verbose >= 2): print "n_components = "+str(n_components)
n_tuples = array1.GetNumberOfTuples()
assert (array2.GetNumberOfTuples() == n_tuples)
if (verbose >= 2): print "n_tuples = "+str(n_tuples)
array_type = type(array1.GetTuple(0)[0])
assert (array_type in [int, float])
assert (type(array2.GetTuple(0)[0]) is array_type)
if (verbose >= 2): print "array_type = "+str(array_type)
if (array3 is None):
array3 = myVTK.createArray(
name="",
n_components=n_components,
n_tuples=n_tuples,
array_type=array_type)
else:
assert (array3.GetNumberOfComponents() == n_components)
assert (array3.GetNumberOfTuples() == n_tuples)
assert (type(array3.GetTuple(0)[0]) is array_type)
for k_tuple in xrange(n_tuples):
if (verbose >= 2): print "k_tuple = "+str(k_tuple)
array3.SetTuple(
k_tuple,
numpy.array(array1.GetTuple(k_tuple)) + numpy.array(array2.GetTuple(k_tuple)))
return array3
def mapDataSetToCellData(
mesh_from,
type_of_support,
mesh_to,
farray_names,
type_of_mapping="PointsWithinRadius",
radius_is_relative=True,
radius=0.5,
n_closest_points=3,
threshold_dist=None,
threshold_val_min=None,
threshold_val_max=None,
verbose=0):
myVTK.myPrint(verbose, "*** mapDataSetToCellData ***")
if (type_of_support == "point"):
datapoints = mesh_from.GetPoints()
dataset = mesh_from.GetPointData()
point_locator = myVTK.getPointLocator(
mesh_from,
verbose=verbose-1)
elif (type_of_support == "cell"):
datapoints = myVTK.getCellCenters(
mesh=mesh_from,
verbose=verbose-1)
dataset = mesh_from.GetCellData()
point_locator = myVTK.getPointLocator(
datapoints,
verbose=verbose-1)
else:
assert (0)
pdata_cell_centers_to = myVTK.getCellCenters(mesh_to)
n_cells = mesh_to.GetNumberOfCells()
farrays_avg = {}
farrays_std = {}
for farray_name in farray_names:
assert (dataset.HasArray(farray_name)), "mesh has no array named "+farray_name+". Aborting."
farray_type = dataset.GetArray(farray_name).GetDataTypeAsString()
farray_n_components = dataset.GetArray(farray_name).GetNumberOfComponents()
farrays_avg[farray_name] = myVTK.createArray(farray_name+"_avg",
farray_n_components,
n_cells,
farray_type)
farrays_std[farray_name] = myVTK.createArray(farray_name+"_std",
farray_n_components,
n_cells,
farray_type)
points_within_radius = vtk.vtkIdList()
for k_cell in xrange(n_cells):
if (type_of_mapping == "ClosestPoints"):
point_locator.FindClosestNPoints(
n_closest_points,
pdata_cell_centers_to.GetPoint(k_cell),
points_within_radius)
elif (type_of_mapping == "PointsWithinRadius"):
if (radius_is_relative):
l = (mesh_to.GetCell(k_cell).GetLength2())**(0.5)
actual_radius = l*radius
else:
actual_radius = radius
point_locator.FindPointsWithinRadius(
actual_radius,
pdata_cell_centers_to.GetPoint(k_cell),
points_within_radius)
else:
assert (0)
#points_within_radius = myVTK.findPointsInCell(mesh_from.GetPoints(), mesh_to.GetCell(k_cell))
for farray_name in farray_names:
if (points_within_radius.GetNumberOfIds()):
values = [numpy.array(dataset.GetArray(farray_name).GetTuple(points_within_radius.GetId(k_id))) for k_id in xrange(points_within_radius.GetNumberOfIds()) if (threshold_dist is None) or (numpy.linalg.norm(numpy.array(datapoints.GetPoint(points_within_radius.GetId(k_id)))-numpy.array(pdata_cell_centers_to.GetPoint(k_cell))) < threshold_dist)]
#print "values = "+str(values)
if (threshold_val_min != None):
values = [value for value in values if (numpy.linalg.norm(value) > threshold_val_min)]
if (threshold_val_max != None):
values = [value for value in values if (numpy.linalg.norm(value) < threshold_val_max)]
#print "values = "+str(values)
if (len(values)):
avg = numpy.mean(values, 0)
std = numpy.std(values, 0)
else:
avg = [0]*farray_n_components
std = [0]*farray_n_components
else:
avg = [0]*farray_n_components
std = [0]*farray_n_components
farrays_avg[farray_name].SetTuple(k_cell, avg)
farrays_std[farray_name].SetTuple(k_cell, std)
for farray_name in farray_names:
mesh_to.GetCellData().AddArray(farrays_avg[farray_name])
mesh_to.GetCellData().AddArray(farrays_std[farray_name])
