Hey Tim,
Looks like that worked well: X = [3:15]; V = sin(X); Xq = [4:.25:12]; ig = InterpGrid(V, BCnil, InterpLinear); y=[ig[x - 2.0] for x in Xq]; plot(X,V,"o",Xq,y, "orange", Xq, sin(Xq), "red"); legend(["Data", "Interp", "Actual"]) <https://lh6.googleusercontent.com/-wBdB9K6sSG4/U00YUDnEtlI/AAAAAAAAHuk/TdkF6Jb8ruw/s1600/better_interp.png>
