numeric (or character) vector giving the
numbers (or names) of the nodes to be retained in the extracted
chain.
condi
numeric (or character) vector giving the
numbers (or names) of the conditioning nodes for the extracted
chain.
value
Numerical values associated to condi.
Details
Integration is done for nodes not belonging to the extracted chain
nor being in the conditioning subset. Then the distribution of the
retained nodes is left identical to this in the initial chain.