Iterative Methods
Coordinate operation calculations can almost always be formulated using an iterative method
Advantages
- ORM parameters embedded as variables
- If properly formulated they are almost always more efficient for the same accuracy as a power series
- Usually the expressions involved are compact
Disadvantages
- Convergence rate depends on formulation and quality of the initial value
- Initial guess must be efficient to compute
- Efficient to compute stopping criterion needed
- Even when this approach works, the direct approximation is almost always more efficient