This will convert alternate representations of CAR process structure into
(adj, weights, num) form required by dcar_normal.
as.carAdjacency(...)Either: a symmetric matrix of unnormalized weights, or two lists specifying adjacency indices and the corresponding unnormalized weights.
Two alternate representations are handled:
A single matrix argument will be interpreted as a matrix of symmetric unnormalized weights;
Two lists will be interpreted as (the first) a list of numeric vectors specifying the adjacency (neighboring) indices of each CAR process component, and (the second) a list of numeric vectors giving the unnormalized weights for each of these neighboring relationships.