I am trying to simulate Brownian motion where the initial position of the particles are generated by random number generators. I need to freeze the particles when it reaches a particular position, how can i do it? kindly help
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I am trying to simulate Brownian motion where the initial position of the particles are generated by random number generators. I need to freeze the particles when it reaches a particular position, how can i do it? kindly help
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Accepted Answer
Walter Roberson
on 17 Dec 2013
How not? Just stop updating those particles once you have detected they have reached the position.
You might want to do something like create a logical vector StillActive, initialized to all true. When the particle is in position, mark it false. Only do calculations on entries that are still true.
Positions(StillActive) = Positions(StillActive) + randn(sum(StillActive),1);
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