Dear all I have a problem, I want to add a small matrix to a larger matrix, where the row and column indexes of the small matrix is mapped to global indexes of the global one.
the problem comes from a kind of finite element method, however, I have to do some operations on the small matrix, and it prevent me from directly assembling the local entries. So I have local matrices and I would like to add it to the global one. At this moment, I have to get the matrix value and add it to the global matrix one by one ... is there a better way to do it? Thanks Best regards Zhifeng
