On 4/28/20 8:50 AM, Yang Liu wrote:
I would like to generate a covariance matrix based on these DoFs. After that I
would like to produce a random vector and associate the DoFs with the random
vectors, in order to compute the quadrature.
I think that's still too abstract. For example, you can create a random vector
using something like this:
Vector<double> r(dof_handler.n_dofs());
for (unsigned int i=0; i<dof_handler.n_dofs(); ++i)
r(i) = std::rand();
I suspect you have a more concrete application in mind, but you need to be
more specific to explain what it is for us to give you suggestions of how to
implement that.
Best
W.
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Wolfgang Bangerth email: bange...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/
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