I am trying to find Y-Axis value from X-Axis but so far no luck . My graph is plotted with 10-15 points with smooth curve set to true. Now what I need to locate is probable value of Y for any given x-value. Slimier to what occurs on click of graph (i think its nearest value displayed on tracker). Please note that I cant use tracker and click events. X-axis value will be provided from external input.
sample image https://i.stack.imgur.com/jMwJo.png