title: How to set minimum and maximum value of pinch gesture recognizer in SWIFT?
body: <p>I need to set minimum and and maximum value of pinch gesture from 0 to 1 in swift.
  Is there any way to do that? </p>
  
  <p>Basically what i need is replacing slider into pinch gesture, I have a chart view in my app and there is a slider which is used to change value of chart. Similarly I want to implement pinch gesture instead of slider, More precisely  the value must be change accordingly when pinching on the chart. Also I need to limit pinching range into 0 to 1 (Pinch scale).</p>