upo {RTisean} | R Documentation |
Tools for finding unstable periodic orbits and their stability.
upo(series, m = -1, r = -1, v = -1, p = 1, w = -1, W = -1, a = -1, s = -1, n = -1, l = -1, x = 0, c = 1,pretty=FALSE)
series |
a matrix or vector. |
m |
embedding dimension. |
r |
absolute kernel bandwidth. |
v |
same as fraction of standard deviation. |
p |
period of orbit. |
w |
minimal separation of trial points. |
W |
minimal separation of distinct orbits. |
a |
maximal error of orbit to be plotted. |
s |
initial separation for stability. |
n |
number of trials. |
l |
number of values to be read. |
x |
number of values to be skipped. |
c |
column to be read. |
pretty |
clean output up. |
The parameter pretty
must be set to FALSE
if the output of upo
is
meant to be post-processed by upoembed
.
A list of three-column matrices, containing respectively the order of period, the level of accuracy and the most unstable orbit eigenvalue.
This actually gives erroneous results
## Not run: dat <- henon(1000) noise <- rnorm(1000,0,0.1*sd(dat[,2])) dat[,2] <- dat[,2]+ noise unstperorbit <- upo(dat,m=2, v=0.1, n=70, p=6,pretty=T) ## End(Not run)