Hi,

is it possible to construct a custom matrix in Eigen? The matrix has the following form:

Code: Select all

x x x
x x x
x x x x x x
    x x x x
    x x x x
    x x x x x x
          x x x
          x x x


I.e,, it consists of block matrices of variable size which overlap at one element. I have written an own class in which the matrix is set up as a vector of Eigen matrices (representing the block matrices), whereas the matrix product is performed block-wise (this is not highly efficient but it works).

Is it possible to transform this class into a "real" Eigen matrix, e.g., by inheriting from matrix base or whatever?

Thanks in advance,
David

that depends on the amount of compatibility you're looking for. The minimal would probably to inherit SparseMatrixBase and implement an InnerIterator.