Reverse order of x-axis

[sappy]

Hello,

does anybody know, how to reverse the elements of the x-axis. At now my x-axis for example goes from 0, 0.5, 1, 1.5, ... to 99.5, 100.0
Is there a way to change the x-axis, like this: 100.0, 99.5, 99.0, ..., 0.5, 0. The 100.0 should start at left x-axis and the 0 shold be on the right.

Greeting

[arun kirshna]

Hello,

Try this:
x<-c(1,4,7,9,10,15)
 y<-c(3,5,8,6,5,14)
x1<-x[rev(order(x))]
plot(x1,y,xlim=rev(range(x)))

A.K.

[sappy]

Thanks,

for the moment it works. But is there a possibility for a logarithmic x-Axis? When i use log='x' i get only a vertical line.

Greetings

[Rui Barradas]

Hello,

Just reverse the xlim values, it defaults to c(min, max), use c(max, min).

x <- 1:10
plot(x)
plot(x, xlim=c(10, 1))

Hope this helps,

Rui Barradas

Em 29-07-2012 18:23, sappy escreveu:

> Hello,
>
> does anybody know, how to reverse the elements of the x-axis. At now my
> x-axis for example goes from 0, 0.5, 1, 1.5, ... to 99.5, 100.0
> Is there a way to change the x-axis, like this: 100.0, 99.5, 99.0, ..., 0.5,
> 0. The 100.0 should start at left x-axis and the 0 shold be on the right.
>
> Greeting
>
>
>
>
> --
> View this message in context: http://r.789695.n4.nabble.com/Reverse-order-of-x-axis-tp4638275.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> [hidden email] mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

[Rolf Turner-3]

(1) Please show context; r-help is *not* nabble.

(2) You might like to investigate the revaxis() function from the
"plotrix" package.

     cheers,

         Rolf Turner

On 30/07/12 07:41, sappy wrote:
> Thanks,
>
> for the moment it works. But is there a possibility for a logarithmic
> x-Axis? When i use log='x' i get only a vertical line.
>

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

[David Carlson]

Show us what you actually did. Rui's example does not generate a problem
with a log axis but it is an index plot.

This also does not generate any problems:

> set.seed(42)
> x <- runif(10)*100
> y <- runif(10)*100
> plot(x, y, xlim=c(100, 1), log="x")

You wouldn't have used xlim=c(100, 0) and then specified a log axis would
you? Since log(0) is -Inf, that could create problems.

----------------------------------------------
David L Carlson
Associate Professor of Anthropology
Texas A&M University
College Station, TX 77843-4352

> -----Original Message-----
> From: [hidden email] [mailto:r-help-bounces@r-
> project.org] On Behalf Of sappy
> Sent: Sunday, July 29, 2012 2:41 PM
> To: [hidden email]
> Subject: Re: [R] Reverse order of x-axis
>
> Thanks,
>
> for the moment it works. But is there a possibility for a logarithmic
> x-Axis? When i use log='x' i get only a vertical line.
>
> Greetings
>
>
>
> --
> View this message in context: http://r.789695.n4.nabble.com/Reverse-
> order-of-x-axis-tp4638275p4638282.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> [hidden email] mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-
> guide.html
> and provide commented, minimal, self-contained, reproducible code.

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.