small point in qplot

[笙耘 彭]

Is there a way to draw small point in qplot to overcome overplotting.
Like in ggplot, you can add geom_plot(shape = ".") layer to do that.
It will draw small pixel dots rather than a large black dot.

Thanks!

[Jean-Olivier Irisson]

qplot(…, size=I(0.2))

Does that do what you want?

Jean-Olivier Irisson
---
Observatoire Océanologique
Station Zoologique, B.P. 28, Chemin du Lazaret
06230 Villefranche-sur-Mer
Tel: +33 04 93 76 38 04
Mob: +33 06 21 05 19 90
http://jo.irisson.com/

[Ben Bond-Lamberty]

How about

>qplot(x,y,data=d,size=I(1))

(That's a capital "i".)

Ben

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[Shengyun Peng]

Yes, definitely, thank you so much.

------------------

Shengyun Peng

MS in Bioinformatics

School of Biology
Georgia Institute of Technology
Atlanta, GA, USA

Email: psy1...@163.com

 

 

 

------------------ Original ------------------

From:  "Jean-Olivier Irisson"<iri...@normalesup.org>;

Date:  Tue, Feb 28, 2012 02:58 AM

To:  "笙耘 彭"<psy1...@gmail.com>; "ggplot2"<ggp...@googlegroups.com>;

Subject:  Re: small point in qplot

 

On 2012-Feb-27, at 19:55 , 笙耘 彭 wrote:
>
> Is there a way to draw small point in qplot to overcome overplotting.
> Like in ggplot, you can add geom_plot(shape = ".") layer to do that.
> It will draw small pixel dots rather than a large black dot.

qplot(…, size=I(0.2))

Does that do what you want?

Jean-Olivier Irisson
---
Observatoire Océanologique
Station Zoologique, B.P. 28, Chemin du Lazaret
06230 Villefranche-sur-Mer
Tel: +33 04 93 76 38 04
Mob: +33 06 21 05 19 90
http://jo.irisson.com/