plot in for loop?

what is the wrong in this ? the plot isn't appear. what should i do to make the plot appear ?

Answer 1

[Image Analyst]

Try putting drawnow inside the loop, or else (like most people would) make Xr and i and array and plot the whole array only once the loop has finished, that is, call plot() outside the loop. Also don't use i as a variable name - it's not recommended since it's the imaginary variable.