[R] Monotonic regression in R??

[Dirk Eddelbuettel]

  "Ed" == Ed  <M.> writes:
  Ed>  Is there R code somewhere for monotonic regression? I have some
  Ed> functions (computer response time curves) that are guaranteed by theory
  Ed> to be monotonic, and some experimental data where they are not. What
  Ed> I'd like to do is plot a smooth monotonic curve through the
  Ed> experimental points. There is no closed form expression for the curve,
  Ed> although there is a recursive difference equation formulation in some
  Ed> simple cases, so ordinary nonlinear regression is not the answer. I
  Ed> have Hardle's book (the title of which escapes me at the moment) which

If you are refering to 

@Book{haerdle90b,
  author        = {Wolfgang H{\"a}rdle},
  title         = {Smoothing Techniques: With Implementation in S},
  year          = 1990,
  publisher     = {Springer Verlag},
  address       = {New York},
  series        = {Springer Series in Statistics},
}

then there should be S code for it on Statlib. That should at least be a
start. 

I think the topic of his code came up hear before with the consensus that
some of the more recent smoothing packages are actually better.

Dirk

  Ed> gives the algorithm, so I can code it if it doesn't exist already, but
  Ed> I was hoping it was already done.  

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