quatern_dquatern_d field in the
NIfTI/ANALYZE header.
quatern_d(object)
"quatern_d"(object)
quatern_d(object) <- value
"quatern_d"(object) <- value
quatern.d(object)
"quatern.d"(object)
quatern.d(object) <- value
"quatern.d"(object) <- valuenifti or anlz.quatern_d field.