[R] Monotonic interpolation

Bert Gunter gunter.berton at gene.com
Thu Sep 6 17:27:26 CEST 2007


RSiteSearch("monotone", restr="func") will give you several packages and
functions for monotone smoothing, including the isoreg() function in the
standard stats package.  You can determine if any of these does what you
want.


Bert Gunter
Genetech Nonclinical Statistics


-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of excalibur
Sent: Thursday, September 06, 2007 8:04 AM
To: r-help at stat.math.ethz.ch
Subject: Re: [R] Monotonic interpolation




Le jeu. 6 sept. à 09:45, excalibur a écrit :

>
> Hello everybody, has anyone got a function for smooth monotonic  
> interpolation
> (splines ...) of a univariate function (like a distribution  
> function for
> example) ?

approxfun() might be what your looking for.

Is the result of approxfun() inevitably monotonic ?
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