Extract the relevant coefficients
extract(extractor, object, base, project)
# S4 method for ANY,character
extract(extractor, object, base, project)
# S4 method for ANY,n2kInla
extract(extractor, object, base = NULL, project = NULL)the extractor function
the n2kModel object
the optional base location of the object
the optional subdirectory
the relevant coefficients