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[Garth Wells <question139887@xxxxxxxxxxxxxxxxxxxxx>]

Question #139887 on DOLFIN changed:
https://answers.launchpad.net/dolfin/+question/139887

    Status: Open => Answered

Garth Wells proposed the following answer:
Here's a complete example:

from dolfin import *
from numpy  import array

g = Expression("0.0 + 1.0/(1 + exp(10*(x[0]-t)))")
T  = 1.0
dt = 0.1
t  = 0.0

while t < T:
    t += dt
    g.t = t
    x = array([0.3, 0.3, 0.3])
    print g(x)

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