[R] Monotonic interpolation

[Liaw, Andy]

Not if Mr. excalibur really want interpolating (as oppose to 
smooting) splines.  Other than linear, I'm not even sure if 
it can be done (though I'm no expert on this).

One possibility is to use the cobs package and play with
the amount of smoothing...

Andy

From: Bert Gunter
> 
> 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 ?
> -- 
> View this message in context:
> http://www.nabble.com/Monotonic-interpolation-tf4392288.html#a12524568
> Sent from the R help mailing list archive at Nabble.com.
> 
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> ______________________________________________
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> PLEASE do read the posting guide 
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> 
> 
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