From: ONKELINX, Thierry <Thierry.ONKELINX_at_inbo.be>

Date: Wed, 23 Jul 2008 10:59:18 +0200

ggplot(data.frame(y,z), aes(y, z)) + geom_point(colour = "blue", size = 6) + scale_x_continuous("x") + opts(title = "x-y plot")

ir. Thierry Onkelinx

Instituut voor natuur- en bosonderzoek / Research Institute for Nature and Forest

Cel biometrie, methodologie en kwaliteitszorg / Section biometrics, methodology and quality assurance

Gaverstraat 4

9500 Geraardsbergen

Belgium

tel. + 32 54/436 185

Thierry.Onkelinx_at_inbo.be

www.inbo.be

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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. Received on Wed 23 Jul 2008 - 09:06:15 GMT

Date: Wed, 23 Jul 2008 10:59:18 +0200

Dear Megh,

You need to use the ggplot2 package instead of ggplot. Use the size argument in geom_point() to get bigger circles. Have a look at Hadley's website for more info (and examples) on ggplot2: http://had.co.nz/ggplot2/

library(ggplot2)

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]

ggplot(data.frame(y,z), aes(y, z)) + geom_point(colour = "blue", size = 6) + scale_x_continuous("x") + opts(title = "x-y plot")

**HTH,
**
Thierry

ir. Thierry Onkelinx

Instituut voor natuur- en bosonderzoek / Research Institute for Nature and Forest

Cel biometrie, methodologie en kwaliteitszorg / Section biometrics, methodology and quality assurance

Gaverstraat 4

9500 Geraardsbergen

Belgium

tel. + 32 54/436 185

Thierry.Onkelinx_at_inbo.be

www.inbo.be

To call in the statistician after the experiment is done may be no more
than asking him to perform a post-mortem examination: he may be able to
say what the experiment died of.

~ Sir Ronald Aylmer Fisher

The plural of anecdote is not data.

~ Roger Brinner

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ensure that a reasonable answer can be extracted from a given body of
data.

~ John Tukey

-----Oorspronkelijk bericht-----

Van: r-help-bounces_at_r-project.org [mailto:r-help-bounces_at_r-project.org]
Namens Megh Dal

Verzonden: woensdag 23 juli 2008 4:31

Aan: hadley wickham

CC: r-help_at_stat.math.ethz.ch

Onderwerp: Re: [R] scatter plot using ggplot

Thanks for this mail. However I am getting following error on that :

Error in inherits(formula, "formula") : could not find function "aes"

And regarding my 3rd query I actually wanted to get "bigger circles" as points, not intended to increase plot size.

Regards,

- On Tue, 7/22/08, hadley wickham <h.wickham_at_gmail.com> wrote:

> From: hadley wickham <h.wickham@gmail.com>

*> Subject: Re: [R] scatter plot using ggplot
**> To: megh700004_at_yahoo.com
**> Cc: r-help_at_stat.math.ethz.ch
**> Date: Tuesday, July 22, 2008, 10:00 PM
**> 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/
*

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