CRP Toolbox Reference |

## crp2## PurposeCreates a cross recurrence plot/ recurrence plot and computes the line of synchronization.## Syntaxcrp2(x)crp2(x,y) crp2(x,m,t,e) r=crp2(x,[],m,t,e) r=crp2(x,m,t,e,'param1','param2',...) r=crp2(x,y,m,'param1') ## DescriptionCreates a cross recurrence plot/ recurrence plot from the embedding vectorsx and y.
Results can be stored into the workspace. Further it is possible to estimate the line of synchronization (LOS)
in order to get the nonparametric time-relationship between the two considered systems.Allows to change the parameters interactively by using a GUI. The embedding dimension m is given by the size of the
n x m matrix x and y; if the matrix y is not specified,
a simple (auto) recurrence plot is created.## ParametersAdditionally dimensionm, delay t and the size of
neighbourhood e are the first three numbers after
the data series; further parameters can be used
to switch between various methods of finding the
neighbours of the phasespace trajectory, to suppress
the normalization of the data and to suppress the
GUI (useful in order to use this programme by other
programmes).
Parameters not needed to specify. ## Limitations
For higher speed in output the whole matrix of the recurrence
plot is in the work space - this limits the application of long data series. However, a solution for using long data series you can find under the description for ## Examples% pendulum's location vector:
a=sin((1:1000)*2*pi/200); % pendulum's velocity vector: b=cos((1:1000)*2*pi/200); crp2(a(1:500),b(1:500),'nonorm','euclidean') b=sin(.01*([1:1000]*2*pi/67).^2); crp2(b(1:500),a(1:700),3,10,.06,'fan') ## See Alsocrp, crp_big, trackplot## ReferencesMarwan, N., Thiel, M., Nowaczyk, N.: Cross Recurrence Plot Based Synchronization of Time Series, Nonlin. Proc. Geophys. 9, 2002. |

crp | crp_big |