Question

MATLAB save output as array

this is my code so far, I'm going to need to save these as arrays or vectors i think to take some statistics on them.

how do i save each walkers position relitive to time

I should end up with 1000x 1000 matrix i think

or 1000 arrays

walkers=1000;
%walkers=input('how many walkers do you want to simulate?')

N = 1000;
%N = input('how many steps do you want?')

for k= 1:walkers
displacement= randn(1,N);
x = cumsum(displacement);
plot(x);
ylabel('position');
xlabel('time');
title('Position of walker');
end

i was trying something to the effect of:

for k= 1:walkers
displacement= randn(1,N);
x(k) = cumsum(displacement);
plot(x(k));
ylabel('position');
xlabel('time');
title('Position of walker');
end

but couldnt get it to function correctly

i also need to put a limit to the min and max the "walkers" can go.

Answer 1

Code :

MATLAB Code:

%walkers=1000;

walkers=input('how many walkers do you want to simulate? :')

%N = 100;

N = input('how many steps do you want? :')

for k= 1:walkers

displacement(k,1:N)= randn(1,N);

x(k,1:N) = cumsum(displacement(k,1:N));

plot(x(k,1:N));

hold on;

ylabel('position');

xlabel('time');

title('Position of walker');

end

OUTPUT:

>> walkers_prog

how many walkers do you want to simulate? :1000

walkers =

1000

how many steps do you want? :1000

N =

1000