title: Reducing Overshoot with CPTScatterPlotInterpolationCurved in CorePlot
body: <p>I'm using CorePlot in an iOS app, and with CPTScatterPlotInterpolationCurved I'm getting overshoot and undershoot with some points. Is this just a fact of using this type of interpolation or is there a way to reduce or eliminate this undershoot/overshoot? Here's an overshoot example:</p>
  
  <p><a href="https://i.stack.imgur.com/wrWOC.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wrWOC.png" alt="enter image description here"></a></p>
  
  <p>(I realize I can disable the interpolation, and may go that way-- the curve is generally nice, however).</p>