[R] Ploting two datasets
Petr Pikal
petr.pikal at precheza.cz
Thu May 25 08:16:03 CEST 2006
Hi
On 25 May 2006 at 0:25, Anderson de Rezende Rocha wrote:
Date sent: Thu, 25 May 2006 00:25:46 -0300 (ART)
From: Anderson de Rezende Rocha <phiberoptic_br at yahoo.com.br>
To: r-help at stat.math.ethz.ch
Subject: [R] Ploting two datasets
> Dears,
>
> I need your help. I have two sets A and B each one containing
> n lines and being composed by the atributes x and y.
Well do you really mean attributes? Maybe they are data frames.
>
> Three questions:
> 1) How can I plot A and B both on the same graphic? I need to show
> that the classes A and B are separable. In this way, I need
> to plot the points of A as "*", and the points of B as "+", for
> example. This would result two clouds.
A<-data.frame(x=1:10, y=rnorm(10)
B<-data.frame(x=1:10, y=rnorm(10)*10
plot(A$x, A$y, ylim=range(A$y, B$y), pch=8)
points(B$x, B$y, ylim=range(A$y, B$y), pch=3)
or maybe you could use Rgobi (Ggobi).
>
> 2) How can I plot the result of question one using multi-levels, that
> is, a set of ellipsis that start on the mean of A and on the
> mean of B?
see package elipse or make your own function which takes means and
draws an ellipse with some setted axes
>
> 3) How can I trace an hiperplane separating the classes A and B just
> depicted in question 1?
>
> I appreciate any help. Thanks for all.
>
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Petr Pikal
petr.pikal at precheza.cz
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