【已解决】怎样用refine的chebyshev系数计算出XRPD的背景?

应助达人

此问题已有答案, 贴出来方便后人:

Chebyshev polynomials of the first kind as described at http://mathworld.wolfram.com/ChebyshevPolynomialoftheFirstKind.html is used. The recurrences relations of Eq. (26) can be used with the x axis normalized to be between -1 and 1. Thus your T1(x) should start at -1 for the first data point and end at 1 for the last data point.