R help - Jul 2008 - A question about using function plot

Hello, everyone! I have spent two hours to get what I wanted in a simple
situation and have not been successful. The set up is extremely simple

x = c(1,2,4,8)
y = c(1,2,3,4)
plot(x, y)

What I need, however, is for the 4 points of 1,2,4,8 to be spaced evenly, not by
their numerical scale. Also, there should not be any other values such as 5,6,7
marked on the axis.

So I tried the following


x = c("1","2","4","8")
y = c(1,2,3,4)
plot(x, y)

No help at all.

Anyone can point me to the right way? Thank you very much.

Jason

What about making x a factor?

Sarah

On Mon, Jul 14, 2008 at 11:00 AM, Jason Liao <jg_liao at yahoo.com>
wrote:
> Hello, everyone! I have spent two hours to get what I wanted in a simple
situation and have not been successful. The set up is extremely simple
>
> x = c(1,2,4,8)
> y = c(1,2,3,4)
> plot(x, y)
>
> What I need, however, is for the 4 points of 1,2,4,8 to be spaced evenly,
not by their numerical scale. Also, there should not be any other values such as
5,6,7 marked on the axis.
>
> So I tried the following
>
>
> x = c("1","2","4","8")
> y = c(1,2,3,4)
> plot(x, y)
>
> No help at all.
>
> Anyone can point me to the right way? Thank you very much.
>
> Jason

-- 
Sarah Goslee
http://www.functionaldiversity.org

Try:

library(lattice)
xyplot(y ~ factor(x))

or

plot(1:length(x), y, xaxt='n')
axis(1, at=1:length(x), labels=x)



On Mon, Jul 14, 2008 at 12:00 PM, Jason Liao <jg_liao at yahoo.com>
wrote:
> Hello, everyone! I have spent two hours to get what I wanted in a simple
situation and have not been successful. The set up is extremely simple
>
> x = c(1,2,4,8)
> y = c(1,2,3,4)
> plot(x, y)
>
> What I need, however, is for the 4 points of 1,2,4,8 to be spaced evenly,
not by their numerical scale. Also, there should not be any other values such as
5,6,7 marked on the axis.
>
> So I tried the following
>
>
> x = c("1","2","4","8")
> y = c(1,2,3,4)
> plot(x, y)
>
> No help at all.
>
> Anyone can point me to the right way? Thank you very much.
>
> Jason
>
> ______________________________________________
> R-help at r-project.org 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.
>


-- 
Henrique Dallazuanna
Curitiba-Paran?-Brasil
25? 25' 40" S 49? 16' 22" O

On 7/14/2008 11:00 AM, Jason Liao wrote:
> Hello, everyone! I have spent two hours to get what I wanted in a simple
situation and have not been successful. The set up is extremely simple
> 
> x = c(1,2,4,8)
> y = c(1,2,3,4)
> plot(x, y)
> 
> What I need, however, is for the 4 points of 1,2,4,8 to be spaced evenly,
not by their numerical scale. Also, there should not be any other values such as
5,6,7 marked on the axis.
> 
> So I tried the following
> 
> 
> x = c("1","2","4","8")
> y = c(1,2,3,4)
> plot(x, y)
> 
> No help at all.
> 
> Anyone can point me to the right way? Thank you very much.
x = c("1","2","4","8")
y = c(1,2,3,4)
plot(seq_along(x), y, xaxt="n", xlab="x")
axis(side=1, at=seq_along(x), labels=x)
> Jason
> 
> ______________________________________________
> R-help at r-project.org 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. 
-- 
Chuck Cleland, Ph.D.
NDRI, Inc. (www.ndri.org)
71 West 23rd Street, 8th floor
New York, NY 10010
tel: (212) 845-4495 (Tu, Th)
tel: (732) 512-0171 (M, W, F)
fax: (917) 438-0894

How about:
    plot.default(factor(x), y, xaxt='n', xlab='x')
    axis(1, at=factor(x), labels=x)

----- Original Message ----- 
From: "Jason Liao" <jg_liao at yahoo.com>
To: <r-help at r-project.org>
Sent: Monday, July 14, 2008 10:00 AM
Subject: [R] A question about using function plot

> Hello, everyone! I have spent two hours to get what I wanted in a simple 
> situation and have not been successful. The set up is extremely simple
>
> x = c(1,2,4,8)
> y = c(1,2,3,4)
> plot(x, y)
>
> What I need, however, is for the 4 points of 1,2,4,8 to be spaced evenly, 
> not by their numerical scale. Also, there should not be any other values 
> such as 5,6,7 marked on the axis.
>
> So I tried the following
>
>
> x = c("1","2","4","8")
> y = c(1,2,3,4)
> plot(x, y)
>
> No help at all.
>
> Anyone can point me to the right way? Thank you very much.
>
> Jason
>
> ______________________________________________
> R-help at r-project.org 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.
>

Your x values look to be multiples of two, therefore you might
be interested in using log values for the x axis.

x = c(1,2,4,8) 
y = c(1,2,3,4) 
plot(x, y, log="x", xaxt='n')
axis(1, at=x, labels=x)