can any one give the code for this simple animation

hi am beginner in animation in matlab i have tried from reading about how to do this simple animation

http://www.youtube.com/watch?v=-LE3BaOtXeU

can any win give to us simple code??

these red square make me confuse

best regards

[Walter Roberson]

duplicates http://www.mathworks.co.uk/matlabcentral/answers/58791-how-can-i-do-this-animation-in-matlab

[mangood UK]

 dear Walter Roberson:
you no right to close my thraed
i post it again because at now the problem not sloved
so instead of close it
give to us some advice