stepfunc {GNE} | R Documentation |
Step functions for relaxation methods
purestep(k) decrstep(k, param) decrstep5(k) decrstep10(k) decrstep20(k)
k |
iteration number. |
param |
parameter for the decreasing step function after which the step decreases. |
The decrstep
function is a decreasing step serie such that decrstep(k)
equals to 1/2/(k - param) when k>param, 1/2, otherwise.
Functions decrstep5, decrstep10, decrstep20
are just wrappers of
decrstep
.
The purestep
function implements a constant step serie equaled to 1.
A numeric.
Christophe Dutang
cbind( purestep(1:20), decrstep(1:20, 7), decrstep5(1:20), decrstep10(1:20), decrstep20(1:20) )