[R] disappointed with x-axes in hist and density plots

[Achim Zeileis]

On Thu, 17 Jun 2004 10:28:57 -0700 Rishi Ganti wrote:

> Thanks, but even with axis() I can't get the x-axis to extend to the
> sides.
> 
> Try, e.g., 
> 
> x = rnorm(1000)
> 
> you should have some values in excess of 3 (or below -3).
> 
> I want to draw the x-axis from -4 to 4, thus encapsulating all points.
> 
> axis(1,-4:4)
> 
> but it won't draw. It TRIES to draw it, but I don't see a -4 or 4 on
> the plot.

Well you need to make enough space before!

When you have got

R> x <- rnorm(1000)
R> y <- rnorm(1000)

you need to make sure that the desired range is covered by the plot:

R> plot(x, y, axes = FALSE, xlim = c(-4, 4))

then you add the x-axis

R> axis(1, at = -4:4)

and y-axis and a box.

R> axis(2)
R> box()

Consult the manuals and ?plot, ?par for more information.
hth,
Z

> 
> ----- Original Message -----
> From: Thomas Lumley
> Sent: 6/17/2004 9:53:33 AM
> To: rishi at post.harvard.edu
> Cc: r-help at stat.math.ethz.ch
> Subject: Re: [R] disappointed with x-axes in hist and density plots
> 
> > On Thu, 17 Jun 2004, Rishi Ganti wrote:
> > 
> > > I've got a few issues with the x-axes in the histogram and density
> > > plots.  First, often the default x-axis doesn't even extend to the
> > > length of my data. R often draws histogram bars  (or density
> > > lines) farther than the drawn x-axis extends. For example, I might
> > > have a histogram bar at -15,000. But I wouldn't know that, because
> > > the most negative number on the x-axis is -10,000.  The second
> > > issue is the use of scientific notation. Yes I can read it, but I
> > > don't prefer it. Is there any way for R just to print out 1000000
> > > and not 1e+6 on these charts?  Thanks for your help.  Rishi
> > >
> > 
> > You can use the axis() function to draw axes with any set of labels
> > you want.
> > 
> > 	-thomas
> 
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