Random Walks in MATLAB: RandDir(N) - File Exchange

Code covered by the BSD License

Highlights from
Random Walks in MATLAB

Random walks with the Econome...
RandDir(N)
RandomGraph(X,S) Produce a random edge on a graph defined by S
RandomWalks_NoEconometrics.m
View all files

from Random Walks in MATLAB by Mark Hoyle
Files which simulate random walks on a lattice and on a graph

RandDir(N)

function out = RandDir(N)

% Generate a random vector from the set {+/- e_1, +/- e_2,..., +/- e_N}
% where e_i is the ith basis vector. N should be an integer.

I = round(ceil(2*N*rand));

if rem(I,2) == 1
    sgn = -1;
else
    sgn = 1;
end
out = zeros(N,1);

out(ceil(I/2)) = sgn*1;

end

Highlights from Random Walks in MATLAB

Highlights from
Random Walks in MATLAB