Ruby実用例 〜スプライン補間〜 - [物ç†ã®ã‹ãŽã—ã£ã½]飛ã³é£›ã³ã®ç‚¹ã‚’滑らã‹ã«ã¤ãªã「3次スプライン補完ã€ã¨ã„ã†æ–¹æ³•ãŒã‚ã‚Šã¾ã™ï¼Žã“ã“ã§ã¯éžå‘¨æœŸé–¢æ•°ç”¨ã®ã‚¹ãƒ—ライン補完をå–り上ã’ã¾ã™ï¼Ž コード †↑ spline.rb †class Spline # åˆæœŸåŒ–．3次スプライン補間曲線を求ã‚ã‚‹ def initialize(x, y) @x = x @y = y @z = [] n = @x.length h = [] d = [] @z[0] = @z[n-1] = 0 for i in 0...n-1 h[i ] = @x[i+1] - @x[i] d[i+1] = (@y[i+1] - @y[i]) / h[i] end @z[1] = d[2] - d[1] - h[0] * @z[0] d[1] = 2 * (@x[2] - @x[0]) for i in 1...n-2 t = h[i] / d[i] @z[i+1] = d[i+2]
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