Python Method for Calculating diagonal rational function interpolation

Python Method for Calculating diagonal rational function interpolation

This article mainly introduces python's method for calculating diagonal rational function interpolation, which involves Python's mathematical operations. If you need it, refer

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'''P = rational (xData, yData, x) Evaluates the diagonal rational function interpolant p (x) That passes through he data points ''' From numpy import zeros Def rational (xData, yData, x ): M = len (xData) R = yData. copy () ROld = zeros (m) For k in range (m-1 ): For I in range (m-k-1 ): If abs (x-xData [I + k + 1]) <1.0e-9: Return yData [I + k + 1] Else: C1 = r [I + 1]-r [I] C2 = r [I + 1]-rOld [I + 1] C3 = (x-xData [I])/(x-xData [I + k + 1]) R [I] = r [I + 1] + c1/(c3 * (1.0-c1/c2)-1.0) ROld [I + 1] = r [I + 1] Return r [0]

I hope this article will help you with Python programming.