I meant to write "gives each finite interval an infinitesimal probability of the result landing there." Which I eventually got to. And we weren't talking about finite range uniforms., which was sort of the point.
On Wed, 30 Jul 2025 at 08:48, Duncan Murdoch <murdoch.dun...@gmail.com> wrote: > > On 2025-07-29 4:44 p.m., Richard O'Keefe wrote: > > The uniform distribution with infinite range gives each possible > > answer infinitesimal probability of being chosen. > > That's also true of a finite range uniform distribution. > > > In the standard real numbers, that probability is ZERO. > > So is that. > > > In fact, the probability of getting a number in *any* prespecified > > finite range is the same, ZERO. > > That's not true for the finite range version, only the improper one. > > Duncan Murdoch > > > One such finite range is the numbers that can be represented in > > floating-point. > > So you are with certainty not going to draw a representable number. > > A complete answer to your question is thus > > ifelse(runif(N) < 0.5, 1, -1)/0 > > > Why do you think you need this? > > > > > > On Tue, 29 Jul 2025 at 04:01, Daniel Lobo <danielobo9...@gmail.com> wrote: > >> > >> Hi, > >> > >> I want to draw a set of random number from Uniform distribution where > >> Support is the entire Real line. > >> > >> runif(4, min = -Inf, max = Inf) > >> > >> However it produces all NAN > >> > >> Could you please help with the right approach? > >> > >> ______________________________________________ > >> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > >> https://stat.ethz.ch/mailman/listinfo/r-help > >> PLEASE do read the posting guide > >> https://www.R-project.org/posting-guide.html > >> and provide commented, minimal, self-contained, reproducible code. > > > > ______________________________________________ > > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > > https://stat.ethz.ch/mailman/listinfo/r-help > > PLEASE do read the posting guide > > https://www.R-project.org/posting-guide.html > > and provide commented, minimal, self-contained, reproducible code. > ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide https://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
