How to move a white square through a black grid

I have made a black 256x256 grid and i want to move a 8x8 white square in an horizontal line, from the top-left corner to the top-right corner, using for loops and the implay command, so i can view the 36 seperate frames in an order, so it seems like a video is playing,depicting the moving square.

This is the code I tried :

x=zeros(256,256);

for M=8:7:256

for T=2:36

x(1:8,M-7:M,T-1:T)=255;

end

end

implay(x,4)

This code gives me 36 frames, but every one of these 36 frames does not depict the square in a different position as it should, but it depicts all the possible positions.

Can someone help ?

Answer 1

[KALYAN ACHARJYA]

Have you tried this way?

x=zeros(256,256);
original_dat=x;
block=ones(8,8);
h=figure,
for i=1:8:256
    for j=1:8:256
    refresh(h)
    x=original_dat;
    x(i:i+7,j:j+7)=x(i:i+7,j:j+7)+block;
    imshow(x);
    pause(0.5); % set as per requirements
    end 
end 

[ATHANASIOS KONSTANTAKOPOULOS]

That actually accomplishes what i was looking for, thank you, but isn't there a way to execute it using the implay command?