Assembler for global basis transfer matrices
The method assembles the transfer matrx between fine and coarse grids. Assumptions are
- the grids are related but not necessarily direct descendants
- the global dune-functions basis are scalar, i.e., leaf nodes in the basis tree
For evaluating local functions on other geometries a small wrapper is written. For chaining sequencial father geometries another small wrapper is written.
Two unit tests:
- first, test wether the transfermatrix interpolates coefficients from corase to fine for lagrange basis
- second, test wether a jump over two grid levels can be reproduced by two simple transfers
Edited by Patrick Jaap