[R] How-to add to LDA ggplot axes the Percentage of variance explained

2013-08-13 Thread Lluis
Hi,

How can I add  to LDA ggplot axes the Percentages of variance explained?

Script:
/require(MASS)
require(ggplot2)
iris.lda-lda(Species ~ Sepal.Length + Sepal.Width + Petal.Length +
Petal.Width,  data = iris)
datPred-data.frame(Species=predict(iris.lda)$class,predict(iris.lda)$x)

 
ggplot(datPred, aes(x=LD1, y=LD2, col=Species) ) + geom_point( size = 4,
aes(color = Species))
/  
Thanks 



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Re: [R] LDA and confidence ellipse

2013-07-12 Thread Lluis
Thanks again



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[R] LDA and confidence ellipse

2013-07-11 Thread Lluis
Hi,

I wish to add confidence ellipse on my LDA result of the iris data set.
Therefore:
Is there statistical logic to do that as I only wish it to make the species
separation more visable?
How can I add it to the script below  (ggplot): 
require(MASS)
require(ggplot2)
iris.lda-lda(Species ~ Sepal.Length + Sepal.Width + Petal.Length +
Petal.Width,  data = iris)
LD1-predict(iris.lda)$x[,1]
LD2-predict(iris.lda)$x[,2]
ggplot(iris, aes(x=LD1, y=LD2, col=iris$Species) ) + geom_point( size = 4,
aes(color = iris$Species))+theme_bw()   

Could someone please help me. Thank you very much.



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Re: [R] LDA and confidence ellipse

2013-07-11 Thread Lluis
Hi,

Thanks works like magic.

BTW
What is the confidence ellipses probability used?



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