RECURRENCE PLOTS

Dear Tony, if I understand correctly, you mean how to apply the RQA measures on a recurrence network? This is not necessary. The recurrence network is represented by the recurrence matrix. If you apply the RQA measures, then there is not difference between recurrence plot or recurrence network. Howe...

Which classes you would like to distinguish? The visualisation of the recurrence plot already exhibits typical features of some classes. However, some classes might not be distinguishable. Even the quantification might sometimes fail. But it would be good to look at certain examples. Do you have som...

This is a typical problem of MS Windows. Unfortunately, you need admin rights for installation of Matlab toolboxes in MS Windows.

Norbert

Hello, what you do is not a JRP but a CRP. For a JRP you have to calculate the RP for each system separately and then calculate the Hadamard product of these two RPs. Moreover, as you use Matlab, you can use the CRP toolbox (just look for it with Google). You can do the following: RP1 = crp(x1); RP2...

If you have Matlab, you can also use the CRP toolbox. This would allow you to write a script for a batch processing of many files.

Hello, assuming you mean the line of identity, i.e. R(i,i) = 1, for i = 1:N, then the diagonal starts at (1,1) and ends at (N,N). The way you plot the recurrence matrix is completely free. Somebody plots it with (1,1) in the upper left corner, others with (1,1) in the lower left corner. It is just n...

Hi Jobst, I try to understand why the m-dim. embedding uses m observations instead of numerical approximations for the first m derivatives. After all, the "natural" choice for the original phase space is (y(t), dy(t)/dt, d²y(t)/dt², ...), right? E.g., a much more natural 2-dim. embedding t...

Hi Denis,

the workshop takes place on a 2-year cycle. Thus, the next one will be in 2011. But, I can promis you that the next workshop will be in Europe - most likely in Scottland.

Best regards
Norbert

Hello,

you can study this web site here. There you will also find an almost complete biography about recurrence plots. But I would suggest of course to read the Physics Reports paper about recurrence plots:
http://www.recurrence-plot.tk/furtherreading.php

Best regards
Norbert

Hi Paula, you can use the CRP toolbox for Matlab. There is the function pss which calculates the mean and maximal phase space diameter (depending on the embedding parameters). You can also normalise your data to standard deviation 1 and then use the threshold as a fraction of the standard deviation....

Yes there is. But you can find much information in books and in the web, therefore, I just mention this entry here (with a good book recommendation):

http://www.agnld.uni-potsdam.de/~marwan ... #embedding

Dear Norbert, I am interested in JRP as my data is multivariate in nature. However, I dint actually how to compute the JRP`s in CRP toolbox in Matlab and the Commandline RP tool. Can you please provide suitable examples for the calculation of the JRP-RQA paramaters. I could not get an idea so as ho...

Sir, I have small doubt in using the Rqa121.exe software. Iam working on windows vista platform, and i use matlab software for my projects. Now i want to use this rqa121.exe for my project. I want to know how to run this program, I have tried to run this with various softwares but i could not. I ne...

3rd International Recurrence Plot Symposium Recurrence plots at the crossroad between theory and application: A flexible approach for studying complex systems Montreal, Canada August 26-28, 2009 We would like to draw your attention to the third international symposium on recurrence plots, which wil...

You can at least use the way back machine to have a look on the VRA web page and to download the software in Version 4.9:

http://web.archive.org/web/200701310233 ... nload.html