how do make an object move within the image that includes a graph?

I have attached a image that is a graph,i want to move a dot kind of object with in the graph route in the image, how do i do it?

Answer 1

[Walter Roberson]

imread() the graphic. image() it up onto the figure. Use plot() to create a "line" consisting of a single point, with LineStyle 'none', MarkerFaceColor set to the color of the dot, MarkerEdgeColor probably set to the same color, MarkerSize set large, Marker set to 'o'.

Then to move the marker, set() the XData and YData properties of the "line" to the new position you want the dot to appear. Remember to drawnow() after each move to make the change visible.