Re: [R] Find inflection points using smooth.spline

2009-03-29 Thread Ravi Varadhan
ns Hopkins University Ph. (410) 502-2619 email: rvarad...@jhmi.edu - Original Message - From: David Winsemius Date: Saturday, March 28, 2009 5:58 pm Subject: Re: [R] Find inflection points using smooth.spline To: r-h...@stat.math.ethz.ch > T.D.Rudolph gmail.com> writes: > &g

Re: [R] Find inflection points using smooth.spline

2009-03-28 Thread David Winsemius
T.D.Rudolph gmail.com> writes: > > > 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 intereste

[R] Find inflection points using smooth.spline

2009-03-27 Thread T.D.Rudolph
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 wit