[R] multiple column argument in formula (MASS:lda)

[Wai-Kuan Yip]

Hello Marcos,
When you use paste(.), it will return a String, and the first argument of
lda(.) does not read a string as formula. 

>lda(Grupo~paste(names(cien[,3:80]),collapse="+"),data=cien)

Here's what I'd do: 

colIndex <- c(1,2,4,5,...) #what ever index of your input data set that you
want to use as variables

#I presume Grupo is the class column (col=3)?
lda(cien[,colIndex], cien[,3])

Hope this helps.. 

Wai-Kuan Yip
http://www.deakin.edu.au/~waiyip http://www.deakin.edu.au/~waiyip 


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