RECURRENCE PLOTS

It is better to send me an email with all information I would need to figure out the problem. (MATLAB version, operation system etc)
Thanks!
NM

Hello Fan.Mi, thanks for your kind words. Regarding your question: it is something different when you calculate the RQA for each of the N channels separately or when you combine all N channels to one phase space trajectory (of then dimension N ), because then you get only one RQA result. It depends ...

univariate means you analyse only one time series bivariate means you analyse two time series, e.g., correlation multivariate means you analyse more than one time series, usually more than two in your case, i guess you simply compare two time series, but all available pairs. your problem looks quit...

Hi,

no, you can only compare two time series with a CRP. But what is your research question? I guess that a bivariate test is mostly sufficient.

Best
Norbert

Hi Migul, great! Thanks for sharing the software and the code! I'm sure there are scientists who would like to use it. Perhaps you could add some instructions how to use the software and how to compile the source code and some note about the requirements to use the software (Win10?, 64bit?). I haven...

Hi Marina, the Theiler window corrects only the recurrences that are close to the reference point. All other, "futher away" points are not corrected. For a RP it means that the Theiler window is a small band along the main diagonal. Therefore, it will only partly affect the LAM measure. Bes regards ...

Hi,

you have to use the 'nonorm' option in the crp-function, e.g., Best wishes
Norbert

We are organizing a Minisymposium on Recurrence Plots at the conference "Perspectives in Nonlinear Dynamics" (PNLD2016) in Berlin, July 24th–29th, 2016. The programm is now online: http://pnld2016.physik.hu-berlin.de/node/21

Hi David, thanks for the bug report. Yes, you are completely right. This code was not used so much, therefore I missed to include this "normalization" option in this function (although in the help text it is stated that this would work). I have now fixed this problem (R30.5). crqad allows to select ...

It is the most simple one. This means, an simple ASCII file with a column of numbers (or several columns).

Thanks for the hint. I will add a remark on the website.

I would be careful when using embedding. Do not overembed because it will cause artefacts (spurious correlations in the RP and artificially many long lines). Therefore, I would probably use a low embedding dimension and delay for all channels (e.g., m=3, tau = 2). Final values depend on the data. It...

(reply refers to the CRP Toolbox) It depends on the selected recurrence criterion. When it is a fixed size of the neighbourhood, such for EUC, MAX, MIN, then it is the absolute value of ε. But there are also "dynamical thresholds", such as selecting the fixed amount of nearest neighbours (FAN) or fi...

Maybe let's start with the definition of the RP: Θ(ε–|| x ( i ) – x ( j )|| The threshold ε is just a scalar value. Its choice is somehow related to the value range of the time series or the diameter of the phase space. One way to relate ε to this value range or diameter is to have it as a certain f...

The seventh international recurrence plot symposium will be at the Escola Politecnica (Universidade de Sao Paulo) in Sao Paulo, Brazil, in August 23-25, 2017.

More information:
http://symposium.recurrence-plot.tk/

viniciusjdv wrote:Prof,

How can I use the crqa routine to extract the RQA measures based on a fixed recurrence rate (e.g. RR=5%)?

Simply using: