[R] Simple plot() question

[Andy Bunn]

Hi Mick:

I'm a little unsure if this is what you are after but does this do it?

foo.mat <- matrix(rnorm(100), nrow = 10, ncol = 10)
plot(foo.mat[1,], type="l", xlab = "Crud", ylab = "More Crud")
plot(foo.mat[1,order(foo.mat[1,])], type="l", xaxt = "n", xlab = "Crud",
ylab = "More Crud")
axis(1, at=1:length(foo.mat[1,]), labels= order(foo.mat[1,]))


Seems like a barplot might be a nice way to go too:
barplot(foo.mat[1,order(foo.mat[1,])], names.arg = order(foo.mat[1,]))


A reproducible example would help the list see what you are after as I might
be totally off on this.
HTH, Andy


> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch
> [mailto:r-help-bounces at stat.math.ethz.ch]On Behalf Of michael watson
> (IAH-C)
> Sent: Tuesday, November 16, 2004 9:45 AM
> To: r-help at stat.math.ethz.ch
> Subject: [R] Simple plot() question
>
>
> Hi
>
> First a simple question to do with plot().  How do I change the x-axis
> labels on a plot?
>
> For example, I am plotting each row of a matrix, and I want each row to
> be a line on my graph.  Simple really.  Eg:
>
> plot(sg[1,], type="l")
>
> When I do this, the x-axis is labelled 1:38, as I have 38 columns in my
> matrix.  When I do:
>
> plot(sg[1,order(sg[1,])], type="l")
>
> Ideally I would like the x-axis labels to reflect the new order of the
> columns, but they're still numbered 1:38... I've read the plot() docs
> and the par() docs and can't figure it out - I know I'm missing
> something obvious, but what?
>
> Cheers
>
> Mick
>
> Michael Watson
> Head of Informatics
> Institute for Animal Health,
> Compton Laboratory,
> Compton,
> Newbury,
> Berkshire RG20 7NN
> UK
>
> Phone : +44 (0)1635 578411 ext. 2535
> Mobile: +44 (0)7990 827831
> E-mail: michael.watson at bbsrc.ac.uk
>
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