Hello,

Im trying to fill a sparse matrix from a single array; i normally use this approach when working with normal matrixes:

Code: Select all

void myFunction ( double p[] )
{
    Eigen::Matrix<double, n, n> eigenMatrix = Eigen::Map<Eigen::Matrix<double, n, n>>(p);
}


How can I achieve the same results but with SparseMatrix?

I looked at the documentation but I am having some issues, Im probably missing something, here below is the link
https://eigen.tuxfamily.org/dox-devel/classEigen_1_1Map_3_01SparseMatrixType_01_4.html

Thanks!

What do you mean by "from a single array", what does it contain? is it dense with explicit zeros? Is it an array of triplets?

Have a look at the following page to get an introduction to sparse matrix storage: http://eigen.tuxfamily.org/dox-devel/gr ... parse.html