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fix(example/ft03_heat): update to work with fenics 2019.1.0 #70

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fix(example/ft03_heat): update to work with fenics 2019.1.0 #70

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fix(example/ft03_heat): updated to work with fenics 2019.1.0 
Uses fixes from #42 (comment) and #52 (comment)
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@mlaradji
mlaradji committed Mar 2, 2020
commit c3c714e355d32bc137892226de6e1d490a439a87
11 changes: 7 additions & 4 deletions pub/python/vol1/ft03_heat.py
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Original file line number Diff line number Diff line change
Expand Up @@ -11,8 +11,11 @@
"""

from __future__ import print_function
from fenics import *

# Hold plot
import matplotlib.pyplot as plt
import numpy as np
from fenics import *

T = 2.0 # final time
num_steps = 10 # number of time steps
Expand Down Expand Up @@ -63,11 +66,11 @@ def boundary(x, on_boundary):

# Compute error at vertices
u_e = interpolate(u_D, V)
error = np.abs(u_e.vector().array() - u.vector().array()).max()
error = np.abs(np.array(u_e.vector()) - np.array(u.vector())).max()
print('t = %.2f: error = %.3g' % (t, error))

# Update previous solution
u_n.assign(u)

# Hold plot
interactive()
plot(u)
plt.show()