Re: How to extract sequenced data from an array?

[new_user]

> Yes, xcorr looks much more appropriate than what I said. It looks like
> you only want a vector. You may want to run xcorr in autocorrelation
> mode on each column

> c1=xcorr(X(:,1));
> c2=xcorr(X(:,2));

> then maybe correlate the two results

> c=xcorr(c2,c2);

> then look for peaks in c. not sure if this is the correct approach.
> However, xcorr on a bigx2 array may well result in you having to
> terminate the process again.

I run c1=xcorr(X(:,1)); on data sample, but graph is symmetrical, suggesting 
I'm not seeing native data positions to track down where sequenced data ends:

image link: http://i53.tinypic.com/2py9wte.png

As it can be noticed from screen-shot I run gnuplot with "every 10" as I get 
out of memory otherwise

Although I appreciate help with this approach I would like automation solution, 
as even if output from c1=xcorr(X(:,1)) would be correct to the problem, I 
still have to plot data then find approximate position etc

I'm just afraid of large data sets :)