eode_stability_type {ecode} | R Documentation |
Check whether an equilibrium point is stable or not, and give the specific type (i.e. stable node, stable focus, unstable node, unstable focus, saddle, or centre). Check whether an equilibrium point is stable or not.
eode_stability_type(x, value, eps = 0.001)
x |
Object of class " |
value |
an object of class " |
eps |
Precision used to check whether the input phase point is an equilibrium
point. If the absolute value of any component of the phase velocity vector at a
phase point is lower than |
a string character indicate the type of the equilbrium point.
eq1 <- function(x, y, r1 = 1, a11 = 1, a12 = 2) (r1 - a11 * x - a12 * y) * x
eq2 <- function(x, y, r2 = 1, a21 = 2, a22 = 1) (r2 - a21 * x - a22 * y) * y
x <- eode(dxdt = eq1, dydt = eq2)
eode_stability_type(x, value = pp(list(x = 0.3333, y = 0.3333)))