Subset Simulated Dispersion Parameters while Preserving Attributes
# S3 method for ddSim
[(x, i, j, ...)array with simulated beta parameters from the glm model, their conversion to distribution parameters. NOTE: subsetting to a column or a row returns a matrix rather than a vector. This simplifies the coding and makes it easier to maintain integrity of data structures, but behavior differs from what is done when subsetting standard R matrices and arrays to a single column or row. Also unlike with standard R arrays and matrices, the class structure and attributes are preserved upon subsetting.
object to subset
row and column indices to subset
ignored
Subset the ddSim object as if it were a simple matrix or array