extract value of random matrix

Hello everyone,

I face a problem and I can not find a way to solve it. My problem is the following:

I simulate a geometric Brownian and an exponential barrier. I am looking to extract the time of contact between my fence and my Brownian. I manage to get a matrix that takes the value 0 if my Brownian is superior and the value of time otherwise. And I would like to extract each value that is after a 0 and a 0 before each value. [0 0 0 1 2 3 4 5 0 0 0 6 0] I would like to extract 1 5 and 6 On a path I can do it with "find" but the idea that I reply I do not see how.

if someone has an idea thank you.

Answer 1

[Image Analyst]

Trivial if you have the Image Processing Toolbox - do you? Otherwise use abs(diff(vector))) with some other code to make sure you don't get uniform areas inside the non-zero areas.

[vachelard Valentin]

I don't have this toolbox :/

I will check that

thx!!

[Image Analyst]

Too bad. Type "ver" on the command line to make sure you don't see it. Using diff() will be a lot more complicated if it's robust enough to handle all the strange cases you might encounter.