A bru_mapper sub-class implementation must provide an
ibm_jacobian() method. If the model size 'n' and definition
values 'values' are stored in the object itself, default methods ibm_n()
and ibm_values() are
available. Otherwise the
ibm_n() and ibm_values() methods also need to be provided.
See also
bru_mapper for constructor methods, and bru_get_mapper for hooks to extract mappers from latent model object class objects.
Other mapper methods:
ibm_eval(),
ibm_eval2(),
ibm_inla_subset(),
ibm_invalid_output(),
ibm_is_linear(),
ibm_jacobian(),
ibm_linear(),
ibm_n(),
ibm_n_output(),
ibm_names(),
ibm_simplify(),
ibm_values()