Which mathematical algorithm is used for interpolation between datapoints in Smooth Line Chart of Echart ?
Is it polynomial fit or Bezier smoothing? I just want to know which mathematical model is used for interpolation for the echart feature given below
https://apache.github.io/echarts-handbook/en/how-to/chart-types/line/smooth-line
I have tried googling, but could not find out which one exactly. Any references that reveals the underlying mathematical model of Echart would be helpful