I was searching information about filling missing values with interpolation and I found three most important ones. So there are :
(1) Linear Interpolation
(2) Spline Interpolation
(3) Stineman Interpolation
Can you please share with me algorithms behind those ? I was searching on internet something about using them to fill missing data and I couldn't find anything about Spline or Stineman interpolation. Is there any way how can we use polynomial interpolation to estimate missing values ? I couldn't find also an R code for that.