Find inflection points using smooth.spline
Is there any way to identify or infer the inflection points in a smooth spline object? I am doing a comparison of various methods of time-series analysis (polynomial regression, spline smoothing, recursive partitioning) and I am specifically interested in obtaining the julian dates associated with the inflection points inferred by the various models. Tyler e.g. http://www.nabble.com/file/p22752459/smooth.spline.pdf smooth.spline.pdf
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