[color=#0000ff]pull CAS view up to see more of the algorithm[/color][br]Adjust spline knots in spreadsheet[br][color=#0000ff]Adding new knot - expand piece wise spline function [/color][br]If( x≤Element(X,2),Element(Splines,1),[br] Element(X,2)≤x≤Element(X,3),Element(Splines,2),[br] Element(X,3)≤x≤Element(X,4),Element(Splines,3),[br] [i][color=#ff7700]Element(X,4)≤x≤Element(X,5),Element(Splines,4),[br] x≥Element(X,5),Element(Splines,5))[/color][/i][br][color=#0000ff]To high light a single spline between knots set in last row [/color][br]index of sequence j,1,1/j,2,2/j,3,3/j,4,4 [br][color=#0000ff]See below for notes on the algorithm ↓[/color]