title: how to drag a plot symbol on a graph to different position so that the graph reloads again with that position change in coreplot ios
body: <p>Wt I done is I drawn the scatter plot with the default plot data values. What I want to do is when I drag any of the plot symbol on the scatter line I want to reload the graph with that plot position change.</p>
  
  <p>I am not getting any idea how to do it. Can anyone suggest me how to start up with this.</p>