[R] constant function

[Eik Vettorazzi]

Hi Chris,
how about this:

constant<-function(x) rep(7,length(x))
curve(constant,-1000,100)

cheers.

Am 07.03.2012 06:41, schrieb Chris Waggoner:
> Is it possible to define a constant function (for example the zero function) in R?
> 
> I found the following unsatisfying hack to create the "seven function":
> 
> constant <- stepfun( x = -100:100,   y = rep(7,   201)  )
> 
> 
> This is mathematically unsatisfying because the domain is artificially restricted to [-100,100] rather than (-Inf,Inf).
> 
> Additionally, unless I use pch="n" there are ugly dots on the plot (and again this feels hackish).
> 
> 
> Any suggestions on what else to do?
> 
> 
> 
> Thanks in advance.
> 
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Eik Vettorazzi

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