Professor Marwan,

I have some doubts about the use of command line reccurrence plots:

Let's see the use of rp like the official page:

dos('rp -i temp_data -s -m 3 -t 5 -e 0.7 -o rqa.dat');

Doubts:

1) Is this threshold parameter an absolute value of the radius or a percentage value of the maximum diameter of the phase space?

2) Is there a way to vary the parameter m and t? I mean, instead of using "-m 3 -t 7", Could I to use something like that (adapted from the official page):

- Code: Select all
`% import some data`

x=load('soi3.dat');

% data length

N = length(x);

% window length and window step size

w = 100; s = 10;

for i = 1:s:N-w

m=i; tau=round(N/i);

% make sub-string of data

sub_x = x(i:i+w-1);

% save sub-string of data

save('temp_data','-ascii','sub_x')

% call extern rp programme

dos('./rp -i temp_data -s -m m(i) -t tau(i) -e 0.7 -o rqa.dat');

end

delete('temp_data')

Instead of use numbers, could I to use m(i) and tau(i)? I have tested like this and it did not work.

3) The similar use of command line rp in CRP toolbox is like that: (?)

- Code: Select all
`X=temp_data;`

l_min=2; v_min=2;

crqa(X,3,5, 0.7, [], [], l_min, v_min, 1, ...

'euclidean', 'nonormalize', 'silent');

Thanks in advance!

Best regards,

Vinicius Veira.