R help - Oct 2010 - discerning plot dots using colors

Dear List,



I am using the command plot to present the relationship

between bird richness (Y axis) and elevation (X axis).



However, I would like to observe

the distributions of bird richness in different administrative areas (A, B,
C, …., G) in this plot.

For example, the dots in area A might fall in the upper right part of the
plot,     while those in area B might appear in the middle of the elevation
range.



Please kindly advise how to differentiate the dots in distinct areas using
colors.

Thank you.



Elaine

	[[alternative HTML version deleted]]

There are several ways to do this but the package ggplot2

library(ggplot2)
qplot(displ,hwy,data=mpg,colour=factor(cyl))


On Wed, Oct 27, 2010 at 9:06 AM, elaine kuo <elaine.kuo.tw at gmail.com>
wrote:
> Dear List,
>
>
>
> I am using the command plot to present the relationship
>
> between bird richness (Y axis) and elevation (X axis).
>
>
>
> However, I would like to observe
>
> the distributions of bird richness in different administrative areas (A, B,
> C, ?., G) in this plot.
>
> For example, the dots in area A might fall in the upper right part of the
> plot, ? ? while those in area B might appear in the middle of the elevation
> range.
>
>
>
> Please kindly advise how to differentiate the dots in distinct areas using
> colors.
>
> Thank you.
>
>
>
> Elaine
>
> ? ? ? ?[[alternative HTML version deleted]]
>
>
> ______________________________________________
> 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.
>
>


-- 
Daisy Englert Duursma

Room E8C156
Dept. Biological Sciences
Macquarie University? NSW? 2109
Australia

Tel +61 2 9850 9256



Unit 2, 35 Denison St
Hornsby, NSW 2077

Mobile: 0421858456

On Tue, Oct 26, 2010 at 3:13 PM, Daisy Englert Duursma
<daisy.duursma at gmail.com> wrote:
> There are several ways to do this but the package ggplot2
>
> library(ggplot2)
> qplot(displ,hwy,data=mpg,colour=factor(cyl))
>
>

That can of course be done also using the standard plot command
(substitute variable names as necessary):

x = elevation
y = richness
color = as.numeric(as.factor(adminArea))

plot(x,y, col = color, bg = color)

Peter