On 11/02/2016 07:06 AM, hanks0...@gmail.com wrote:
Anyway, what I'm trying to do is to get error = |exact_solution -
numerical_solution| (absolute value of two Deal.II Vector) and then plot this
one using Visit.
But I don't know how to change all elements of error(Deal.II Vector) to
absolute values.
Actually it seems that I can do this by solving (pi_i, pi_j)
(error_j)=(pi_i,std::abs(exact_solution_i - numerical_solution_i)) (i.e.
solving linear system)
But, I wonder if there is more simple way to do that...
There is :-)
for (unsigned int i=0; i<error.size(); ++i)
error(i) = std::fabs(error(i));
Cheers
W.
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Wolfgang Bangerth email: bange...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/
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