[R] Why does plot() ignore the data type for axis labels?

[Gabor Grothendieck]

The output from xy.coords is not being sent to Axis since if it were then
Gavin's code earlier in this thread, which does work, would not.

On Feb 19, 2008 4:08 PM, Mark Difford <mark_difford at yahoo.co.uk> wrote:
>
> Hi Stiffler,
>
> >> I was wondering why the plot() command ignores the datatype when
> >> displaying axis labels...
>
> plot() doesn't ignore the datatype:
>
> > x <- as.integer(c(1,2,3))
> > y <-x
> > typeof(x)
> [1] "integer"
> > mode(x)
> [1] "numeric"
>
> plot(x,y) calls xy.coords(), which recasts x as: x = as.double(x), which is
> fine, since x is (also/primarily) numeric.
>
> ???
>
> See ?double, sub: "Note on names".
>
> HTH, Mark.
>
>
>
> Stiffler wrote:
> >
> > Hello,
> >
> > I was wondering why the plot() command ignores the datatype when
> > displaying axis labels.  More specifically, if the data points are
> > integers then the axis labels should intuitively also be integers, right?
> >
> >> x <- as.integer(c(1,2,3))
> >> y <-x
> >> typeof(x)
> > [1] "integer"
> >> plot(x,y)
> >>
> >
> > The axis labels are 1.0, 1.5, 2.0, 2.5, 3.0  but if the integer type were
> > taken into account they would be 1, 2, 3.
> >
> > PS what's the right way to get integer labels?
> > Z.
> >
>
> --
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>
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>
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