Re: [R] creating axis of the plot before data are plotted

From: stephen sefick <ssefick_at_gmail.com>
Date: Mon, 14 Jul 2008 11:53:16 -0400

try at=seq(from=26, to=32, by=2) in the axis statment hope this helps

Stephen

On Mon, Jul 14, 2008 at 11:21 AM, Zroutik Zroutik <zroutik_at_gmail.com> wrote:

> Dear R-users,
>
> I'm tackling with a problem which causing me a head-ache for a long time. I
> would like to create a nice x-axis to my plots, but I do not know how to
> implement the method.
>
> Imagine a matrix where you have rownames real numbers -- these rownames
> should be written in the x-axis nicely. I could not find any way how.
>
> I'll describe what I'm doing now:
> I have a matrix where each column is an independent curve (number of the
> columns 3-4). The rownames are the x-axis, and the names are real numbers
> (converted to chars, of course). I find the max and the min among the
> values
> in the matrix (for the y-axis) and I'm creating an empty plot. x-axis is
> c(0, nrow(matrix)). Now, I'm creating the x-axis labels
>
> Labels <- seq(1, nrow(matrix), by = 100)
> axis(1, at = NULL, labels = rownames(matrix)[Labels])
>
> At this point I'd like to have instead of "24.12333 26.45667 28.79
> 31.12333 33.45667" at the x-axis, an optimally placed ticks at let's say
> "26 28 30 32" -- this is what I cannot achieve.
>
> Afterwards I'm plotting the curves in different colours. I know that the
> x-values are accessed by the number of their row and not rowname.
>
> Anybody could point me into some direction, please? Thank you upfront!
>
> [[alternative HTML version deleted]]
>
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-- 
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little or so large that all they really do for us is puff us up and make us
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Received on Mon 14 Jul 2008 - 16:06:14 GMT

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