Spline Types. This page gives a breakdown of each spline type, how to use each one, and the advantages/disadvantages of each type. Tl;dr. If you need the spline to pass through the input points, start with a Catmull-Rom Spline.

Lenovo thinkpad permanent muteJan 20, 2010 · To use cubic spline interpolation, simply adjust the Q figures into quarterly values of q by subtracting out earlier values from each quarter. That is, let q1 = Q1, q2 = Q2 – Q1, q3 = Q3 – Q2, and q4 = Q4 – Q3. Then you can use cubic spline interpolation on q1, q2 q3 and q4 to estimate monthly values.

Comparison of Regression Splines with Polynomial Regression. Regression splines often give better results than polynomial regression. This is because, unlike polynomials, which must use a high degree polynomial to produce flexible fits, splines introduce flexibility by increasing the number of knots but keep the degree fixed.