a_rungekutta: Runge-Kutta for the calculation of the a vector in a EM step
Description
Runge-Kutta for the calculation of the a vector in a EM step
Usage
a_rungekutta(avector, dt, h, S)
Arguments
- avector
The a vector.
- dt
Increment.
- h
Step-length.
- S
Sub-intensity matrix.