All Packages Class Hierarchy This Package Previous Next Index
The Full Multigrid (FMG) algorithm works with grids of different sizes corresponding to different levels through the relation size = 2^level + 1, where size is the number of grid elements in one dimension. Restriction is the process of taking a function whose value is known at the grid elements of a grid at a certain level (the fine grid) and producing the values of the function at the grid elements of a grid at the next coarser level (the coarse grid). The fine grid and the coarse grid are oriented such that their corner elements coincide.
public abstract Grid restrict(ConstGrid grid)
All Packages Class Hierarchy This Package Previous Next Index