Generates a random walk (RW) with m steps. The x and y components of each step are drawn from a normal distribution with standard deviation sigma. The RW is confined to a circle of diameter d with reflecting boundary conditions. X0 and Y0 are the initial coordinates of the random walk inside the circle. Output is a vector of positions of the particle.
Sanaz Sadegh (2023). 2D random walk confined in a circular domain with reflective boundaries (https://www.mathworks.com/matlabcentral/fileexchange/60673-2d-random-walk-confined-in-a-circular-domain-with-reflective-boundaries), MATLAB Central File Exchange. Retrieved .
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Inspired by: Draw a circle.
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