I am using the iOS-charts library in (Swift 3) to plot my data into a scatter chart. I have a scatter chart and now would like a line chart to display a non-linear best fit line from the scatter data. Does the charts library have any easy functions for finding a non-linear best fit line, and if not how do I create a line from a function if a have to derive the best fit line function myself. I know how to create a line graph from data points but do not know if charts allows you to make one from a function. An example of what I'm trying to do is below. Any help is appreciated thanks.
Link to iOS-charts http://www.appcoda.com/ios-charts-api-tutorial/
