[R] constant function

Chris Waggoner chris.is.fun at gmail.com
Wed Mar 7 06:41:20 CET 2012

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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