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# Copyright (C) 2009 Anders Logg
#
# This file is part of DOLFIN.
#
# DOLFIN is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# DOLFIN is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with DOLFIN. If not, see <http://www.gnu.org/licenses/>.
#
# First added: 2009-11-11
# Last changed: 2012-11-12
from dolfin import *
from numpy import ones
import matplotlib.pyplot as plt
# TimeSeries requires DOLFIN to be configured with HDF5
if has_hdf5() is False:
print("This demo requires DOLFIN to be configured with HDF5")
exit()
# Create empty time series
series = TimeSeries(MPI.comm_world, "primal")
# Create a mesh and a vector
mesh = UnitSquareMesh(2, 2)
x = Vector()
# Add a bunch of meshes and vectors to the series
t = 0.0
while t < 1.0:
# Refine mesh
mesh = refine(mesh);
# Set some vector values
x = Vector(mesh.mpi_comm(), mesh.num_vertices());
x[:] = ones(x.size())
# Append to series
series.store(mesh, t)
series.store(x, t)
t += 0.2
# Retrieve mesh and vector at some point in time
series.retrieve(mesh, 0.29)
x = Vector()
series.retrieve(x, 0.31, False)
# Plot mesh
plot(mesh)
plt.show()
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