R help - Jul 2008 - scatter plot using ggplot

I used ggplot to create a scatter plot :

library(ggplot)
library(mnormt)
Sigma = matrix(c(1, 0.6, 0.6, 1), 2, 2)
x = rmnorm(20, c(0,0), Sigma)
xx = x[order(x[,1]),]
y = xx[,1]
z = xx[,2]
qplot(z, y, type="point", main="x-y plot",
xlab="x", col="blue")

However I want following:

1. Plot color must be Blue (where it is displaying as red)
2. There should not be any color platted
3. Plot size must be larger than what it is displacing

Can anyone please tell me how to do that?

Regards,

On Tue, Jul 22, 2008 at 3:42 AM, Megh Dal <megh700004 at yahoo.com>
wrote:
> I used ggplot to create a scatter plot :
>
> library(ggplot)
> library(mnormt)
> Sigma = matrix(c(1, 0.6, 0.6, 1), 2, 2)
> x = rmnorm(20, c(0,0), Sigma)
> xx = x[order(x[,1]),]
> y = xx[,1]
> z = xx[,2]
> qplot(z, y, type="point", main="x-y plot",
xlab="x", col="blue")
>
> However I want following:
>
> 1. Plot color must be Blue (where it is displaying as red)
> 2. There should not be any color platted
You can't currently do this with qplot (but will be able to in the
next version).  Use ggplot() instead:

ggplot(data.frame(y,z), aes(y, z)) +
geom_point(colour = "blue") +
scale_x_continuous("x") +
opts(title = "x-y plot")
> 3. Plot size must be larger than what it is displacing
Make the window bigger?

Hadley

-- 
http://had.co.nz/