squares moving error in matlab

Question

nctt 2023-12-24

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2063717-squares-moving-error-in-matlab

编辑： nctt 2023-12-27

so i am trying to write a code i want to move squares in other squares randomly,there is 10x10 squares. squares move but i dont know my code is true can you help? i cant share the whole code, because its a school project, i just want to know if this makes sense, its something like this (i added particle poisitons because i think thats the whole point and i forgot)

particle_positions = ones(num_of_particles, 2) * num_of_cells / 2 + 0.5
...
     move_x = randi([-1, 1]);
...
    if xnew < 1
    xnew > num_of_cells ;
    move_x = -move_x;
end

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Answer 1

Image Analyst 2023-12-24

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This doesn't make any sense:

if xnew < 1
    xnew > num_of_cells ;
    move_x = -move_x;
end

It should be something like

if xnew < 1
    % Don't let it go from 1 to 0
    xnew = 1;
elseif xnew > num_of_cells
    distancePast = xnew - num_of_cells;
    xnew = num_of_cells - distancePast;
end