Reading data for discriminant analysis

Dear R users,

I want to do discriminant analysis on my data. I have
successfully followed the discriminant analysis in V & R on
the iris data:

ir <- rbind (iris3[,,1],iris3[,,2],iris3[,,3])
ir.species <- c(rep("s",50),rep("c",50),rep("v",50))
a <- lda(log(ir),ir.species)
a$svd^2/sum(a$svd^2)

[1] 0.996498601 0.003501399

a.x <- predict(a,log(ir),dimen=2)$x
eqscplot (a.x,type="n",xlab="first linear discriminant", ylab = "second linear discriminant"

+ )

text (a.x, ir.species)

I believe that the iris3 is rather special data format. 
But I am unable to get a text file to become something like iris3.
I would like to be able to formulate my data into a useable format. 
What is the proper procedure to create iris3 from external sources.

Thanks for your help,


Clayton Springer

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