title: How can I find a specific point in a figure in MATLAB?
body: <p>I want a specific value in the figure in MATLAB. I put the black circle and arrow manually through the figure insert option. But How can I set the value now?
  I want the x-axes values that are exactly 90% of each CDF curve.
  here I am attaching my MatLab figure in jpg mode.</p>
  
  <p><img src="https://i.stack.imgur.com/ZiWIk.jpg" alt="Image of CDF"></p>