Hello,
This is a very simple question; I would like to create this kind of object:

Code: Select all

const SparseMatrix<double>

But filling up the SparseMatrix involves the setFromTriplets() method, which requires a non-constant object. It cannot be done inside a constructor (to my knowledge).

Is there any solution to bypass this and build + fill up a constant SparseMatrix? Any appropriate constructor or other method? Thank you very much for your help.

const_cast<SparseMatrix<double>&>(mat).setFromTriplets()

or create a non const tmp and "move" it to the const one.

Thank you