[R-sig-teaching] Plot f(x) = x^(1/5) (fwd)
bob at statland.org
bob at statland.org
Wed May 18 21:13:58 CEST 2016
Is this a STATISTICAL problem? In this and the earleir post I think
you may be using R for a purpose for which it was not intended.
That said, you might find something useful here:
http://stackoverflow.com/questions/12702248/plotting-implicit-function
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> Subject: Re: [R-sig-teaching] Plot f(x) = x^(1/5)
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> Dear All:
>
>
> can someone please help me to plot the *Folium of Descrates:** x^3+y^3=3xy
> for x<-seq(-5,5,0.010) and **y<-seq(-5,5,0.010) *
> <https://www.google.com/search?biw=1155&bih=597&q=R:+Folium+of+Descartes&spell=1&sa=X&ved=0ahUKEwiBrsnWpeTMAhUFKB4KHU5TD0EQvwUIGSgA>
>
>
> with thanks
> steve
>
> On Tue, May 17, 2016 at 9:07 AM, Gabor Grothendieck <ggrothendieck at gmail.com
> > wrote:
>
> > Try this:
> >
> > y <- sign(x) * abs(x)^(1/5)
> >
> > On Tue, May 17, 2016 at 8:44 AM, Steven Stoline <sstoline at gmail.com>
> > wrote:
> > > Dear All:
> > >
> > >
> > > I am trying to plot the function f(x) = x^(1/5) for x=seq(-2,2,0.01). It
> > > give me only the plot of f(x) for the positive part of x. I checked the
> > > values of f(x), it is NaN for all negative values of x.
> > >
> > > *this is my code:*
> > >
> > >
> > > x<-seq(-2,2,0.01)
> > > y<- (x)^(1/5)
> > > plot(x,y, type="l", lwd=3, xlab = " ", ylab = " ", col="blue")
> > > abline(v=0, col="gray", lty=2, lwd=3)
> > > abline(h=0, col="gray", lty=2, lwd=3)
> > >
> > >
> > >
> > > any help will be appreciated.
> > >
> > >
> > > with many thanks
> > > steve
> > > --
> > > Steven M. Stoline
> > > 1123 Forest Avenue
> > > Portland, ME 04112
> > > sstoline at gmail.com
> > >
> > > [[alternative HTML version deleted]]
> > >
> > > _______________________________________________
> > > R-sig-teaching at r-project.org mailing list
> > > https://stat.ethz.ch/mailman/listinfo/r-sig-teaching
> >
> >
> >
> > --
> > Statistics & Software Consulting
> > GKX Group, GKX Associates Inc.
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> > email: ggrothendieck at gmail.com
> >
>
>
>
> --
> Steven M. Stoline
> 1123 Forest Avenue
> Portland, ME 04112
> sstoline at gmail.com
>
> [[alternative HTML version deleted]]
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